Date of use : 18 September 1925, Switzerland

Photo-Metro Switzerland Business Postcard

This postcard represents a piece of commercial correspondence associated with the firm "Eigenmann Photo-Metro," located in the Swiss city of St. Gallen. The front of the card bears the printed name of the company and the place of origin, while the address section indicates that the item was sent to Alois Kraus in the town of Schwabmünchen in Bavaria, Germany. The message written on the reverse side contains a date indicating that the document was prepared on 18 September 1925. The postcard provides an interesting example of how technical accessories used in photography were obtained through international commercial networks.

The sender of the card, Eigenmann Photo-Metro, was likely a commercial business specializing in photographic equipment and photographic laboratory supplies. During the early twentieth century the growing popularity of photography in Europe led to the emergence of specialized shops and suppliers dedicated to photographic technology. These businesses typically sold cameras, lenses, darkroom equipment, and photographic printing materials. In addition, they supplied a wide range of accessories required by professional studios and amateur photographers.

The recipient of the postcard, Alois Kraus, operated a "Federklammer-Fabrik" in Schwabmünchen, which indicates a factory producing metal springs or clips. The text written on the card shows that the sender requested samples of products described as "Copier- & Filmklammern." These items were most likely small metal clips used in photographic processing or printing procedures. In darkroom work various types of metal clamps were commonly employed to hold photographic paper or film strips in place. For this reason it is reasonable to interpret these products as technical accessories used in photographic laboratories.

This correspondence illustrates that the photographic industry was not limited to optical manufacturing or chemical production. It also depended on a wide range of mechanical components and accessories produced by other industrial sectors. The use of metal clamps, holders, and similar tools demonstrates how photography relied on a broader network of suppliers working in different branches of manufacturing.

From a postal history perspective the card bears a Swiss postage stamp and a postal cancellation associated with the city of St. Gallen. During the early twentieth century St. Gallen was an important commercial center within Switzerland, known for its active economic and industrial environment. Businesses involved in photographic equipment trade were therefore likely to operate in such urban commercial centers.

The printed letterhead design on the postcard also reflects the increasing importance of corporate identity in commercial correspondence. The company name and location appear in printed form at the top of the card, allowing the sender to be easily recognized. Letterhead postcards of this type were commonly used by small and medium-sized businesses in the early twentieth century. The postcard format offered a relatively inexpensive and efficient means of communication for routine commercial inquiries.

From a philatelic perspective the postcard may be placed within several collecting categories. It can be considered part of Swiss postal history while also belonging to the category of commercial ephemera related to the photographic industry. Moreover, because it documents the trade of technical accessories used in photographic work, it provides insight into the material infrastructure that supported photographic practice during the early twentieth century.

Record Information

Title: Photo-Metro Switzerland Business Postcard

Category: Photographic Industry History / Technical Accessories

Subcategory: International Trade / Darkroom Supplies

Country: Switzerland (Sender) → Germany (Recipient)

City: St. Gallen (Sender) → Schwabmünchen (Recipient)

Date of use: 18 September 1925

Company (Sender): Eigenmann Photo-Metro, St. Gallen, Switzerland. A commercial business specializing in photographic equipment and laboratory supplies.

Company (Recipient): Alois Kraus, Federklammer-Fabrik (spring and clip factory), Schwabmünchen, Bavaria, Germany. A manufacturer of metal springs and clips, including products used in photographic processing.

Object Type: International commercial postcard with printed letterhead

Postal Features: Swiss postage stamp; St. Gallen postal cancellation (18 September 1925).

Language: German

Material: Paper postcard

Dimensions: Standard postcard format

Notable Feature: Commercial inquiry for "Copier- & Filmklammern" (copier and film clips), illustrating the supply chain for photographic darkroom accessories and the interdependence between photographic and metalworking industries.

Collection Theme: Eigenmann Photo-Metro, St. Gallen, Swiss photography, Schwabmünchen, Federklammer-Fabrik, darkroom accessories, metal clips, photographic supplies, international trade, 1920s commerce.

Archival Significance: This 1925 commercial postcard documents the cross-border trade of photographic darkroom accessories, illustrating the broader industrial network that supplied mechanical components to the photographic industry.

Research Note:

This article is based on historical research and independent analysis of the material in the author's collection. The text has been prepared as an original interpretative study and does not reproduce copyrighted material.

This item is documented as part of the Photography in Postal History research project.
For research context, see the Research Methodology.
For academic reference, please refer to How to Cite This Archive.

Date of use : 1923, Germany

Argenta Photographic Paper Business Stationery – Germany

This envelope represents a commercial postal document connected to the photographic industry in early twentieth-century Germany. The printed heading in the upper left corner reads "Münchener Photowerk Gebrüder Müller – Fabrik photographischer Papiere – München 42," clearly identifying the sender as a Munich-based manufacturer of photographic printing paper. The German phrase "Fabrik photographischer Papiere" indicates that the company specialized in the production of light-sensitive photographic papers used by professional photographers and photographic studios.

A prominent graphic label on the envelope displays the brand names "Argenta" and "Alba." This label most likely served as a commercial trademark or advertising element used by the company to promote specific photographic paper products. During the late nineteenth and early twentieth centuries photographic paper manufacturers frequently marketed their products under distinct brand names that referred to particular paper types, surface qualities, or photographic processes. Such visual trademarks were commonly integrated into company stationery in order to reinforce brand recognition within professional photographic networks.

The envelope is addressed to "Fa. Fr. Grittmatter – Fotografie – Basel – Schweiz," indicating that the recipient was a photographer or photographic business located in Basel, Switzerland. Basel was an important commercial and cultural center in Switzerland during the early twentieth century and maintained strong economic connections with southern Germany. Trade between Germany and Switzerland in photographic materials was particularly active, as German manufacturers supplied a wide range of photographic products to professional photographers throughout Europe.

The postage stamps affixed to the envelope bear the inscription "Deutsches Reich" and display denominations expressed in billions of marks. These extremely high nominal values are characteristic of the hyperinflation period in Germany during 1923. As the value of the German currency rapidly declined, postal rates increased dramatically, forcing the German postal administration to issue stamps with very high denominations. The presence of stamps marked with values such as "2 Milliarden" indicates that the envelope was mailed during this extraordinary period of economic instability within the Weimar Republic.

Postal markings confirm that the envelope traveled through the official German postal system as part of an international commercial correspondence between Germany and Switzerland. Such documents provide valuable insight into the economic relationships that connected photographic manufacturers with professional photographers and distributors across Europe. Photographic paper manufacturers relied on extensive networks of professional clients, and business communication was frequently conducted through postal correspondence.

The document also reflects the broader industrial structure of the photographic sector during the early twentieth century. As photography became increasingly widespread, the demand for photographic paper grew significantly, leading to the development of specialized manufacturing firms. Germany was one of the leading centers of photographic production in Europe, with cities such as Munich, Berlin, and Dresden hosting numerous companies involved in photographic technology and materials.

From a collecting perspective, the envelope falls into several relevant categories. It can be classified as commercial correspondence related to the photographic industry. At the same time, the hyperinflation-era stamps place it within the philatelic history of the Weimar Republic. Finally, it serves as a documentary artifact illustrating the commercial relationships between photographic manufacturers and professional photographers in early twentieth-century Europe.

Record Information

Title: Argenta Photographic Paper Business Stationery – Germany

Category: Photographic Industry History / Manufacturing

Subcategory: International Trade / Weimar Republic Hyperinflation

Country: Germany (Sender: Munich) → Switzerland (Recipient: Basel) 🗺️ Show Route

City: Munich (Sender: Münchener Photowerk Gebrüder Müller) → Basel (Recipient: Fa. Fr. Grittmatter)

Date of use: 1923

Company (Sender): Münchener Photowerk Gebrüder Müller, München 42, Germany. A Munich-based manufacturer of photographic printing paper, producing products under the "Argenta" and "Alba" brand names.

Company (Recipient): Fa. Fr. Grittmatter, Fotografie, Basel, Switzerland. A photographer or photographic business in Basel.

Object Type: International commercial envelope with printed letterhead and brand label

Postal Route 🚂📮 (Estimated Route): Munich, Germany → Basel, Switzerland (c.1923)

Estimated Travel Time: Approximately 1-2 days (railway via Ulm, Stuttgart, Karlsruhe)

Postal Features: German postage stamps with "Deutsches Reich" inscription and billion-mark denominations (characteristic of 1923 hyperinflation); Munich postal cancellations.

Language: German

Material: Paper envelope

Dimensions: Standard envelope format

Notable Feature: Stamps with billion-mark denominations reflecting the German hyperinflation of 1923; printed brand label for "Argenta" and "Alba" photographic papers.

Collection Theme: Münchener Photowerk, Gebrüder Müller, Argenta, Alba, photographic paper manufacturing, Munich photographic industry, Basel photography, Weimar Republic, German hyperinflation, Deutsches Reich stamps, international photographic trade, professional photography supplies.

Archival Significance: This 1923 envelope documents the international trade of German photographic paper manufacturers during the Weimar Republic, while the billion-mark stamps provide tangible evidence of the hyperinflation crisis that affected postal communication.

🚂📮 Postal Route: Munich → Basel (c.1923) (Estimated Route)

📷 Münchener Photowerk (Munich) 🇩🇪 → 🚂 Railway → 🇩🇪 Ulm → 🇩🇪 Stuttgart → 🇩🇪 Karlsruhe → 🇩🇪 Basel (Fr. Grittmatter) 🇨🇭

📮 Commercial correspondence (photographic paper order) → 🚂 German railway network → 📬 Photographer in Basel, Switzerland
Argenta & Alba photographic papers | Hyperinflation stamps (billion-mark denominations) | Weimar Republic (1923) | Estimated travel time: 1-2 days

Map data © OpenStreetMap contributors (ODbL) – https://www.openstreetmap.org/copyright

Research Note:

This article is based on historical research and independent analysis of the material in the author's collection. The text has been prepared as an original interpretative study and does not reproduce copyrighted material.

This item is documented as part of the Photography in Postal History research project.
For research context, see the Research Methodology.
For academic reference, please refer to How to Cite This Archive.

Date of use : 6 November 1970, Hong Kong

Jones Photo Supplies Business Mail – Hong Kong to Germany

This envelope represents a piece of international commercial correspondence related to the photographic supply trade during the second half of the twentieth century. The printed sender's address in the upper left corner reads "Jones Photo Supplies Ltd., P.O. Box 6488, Kowloon, Hong Kong," indicating that the letter originated from a photographic equipment supplier based in Hong Kong. The circular postmark confirms this origin, displaying "Kowloon, Hong Kong, 6 Nov 1970," which places the mailing within the global commercial environment of the early 1970s.

The recipient is identified as "Obergassner K.G., 8 München 13, Postfach 310, Western Germany." The abbreviation "K.G." refers to "Kommanditgesellschaft," a German legal form describing a limited partnership. This suggests that the recipient was a commercial enterprise operating in Munich, one of the major economic and industrial centers of West Germany during the Cold War period.

The sending firm, Jones Photo Supplies Ltd., was likely a trading company dealing in photographic equipment, accessories, and laboratory materials. During the 1960s and 1970s Hong Kong functioned as a major international distribution center for photographic goods. Products manufactured in Japan, Europe, and the United States were frequently routed through Hong Kong before being distributed across Asian markets. Conversely, Hong Kong-based trading companies also exported photographic accessories and optical products to European markets. Companies such as Jones Photo Supplies therefore likely operated as intermediaries connecting manufacturers with international distributors.

The late 1960s and early 1970s represent a period of rapid technological development within the photographic industry. Japanese camera manufacturers had established a dominant position in global markets, while photographic equipment—including cameras, lenses, flash systems, and darkroom materials—was traded extensively across international commercial networks. Hong Kong played an important logistical role in these networks, serving as a commercial hub linking Asian production centers with Western markets.

The postage stamp affixed to the envelope belongs to the Hong Kong postal system during the period of British colonial administration. The portrait visible on the stamp depicts Queen Elizabeth II, a common motif on Hong Kong postage issues prior to the territory's transfer of sovereignty in 1997. The cancellation mark confirms that the letter was processed through the Kowloon postal district.

The envelope bears the label "By Air Mail / Par Avion," indicating that the correspondence was transported through the international airmail system. By the late twentieth century airmail had become the standard method for long-distance commercial communication, particularly between Europe and Asia. The use of airmail significantly reduced delivery times and facilitated the rapid exchange of business correspondence between international trading partners.

From a philatelic perspective, the envelope belongs to several intersecting collecting categories. It may be classified as commercial photographic trade mail, Hong Kong postal history, and international airmail correspondence. Furthermore, it also represents a small but meaningful artifact documenting the commercial connections between Hong Kong and West Germany during the Cold War era.

Record Information

Title: Jones Photo Supplies Business Mail – Hong Kong to Germany

Category: Photographic Industry History / International Trade

Subcategory: International Correspondence / Airmail

Country: Hong Kong (Sender: Kowloon) → West Germany (Recipient: Munich) 🗺️ Show Route

City: Kowloon, Hong Kong (Sender: Jones Photo Supplies Ltd.) → Munich, West Germany (Recipient: Obergassner K.G.)

Date of use: 6 November 1970

Company (Sender): Jones Photo Supplies Ltd., P.O. Box 6488, Kowloon, Hong Kong. A trading company dealing in photographic equipment, accessories, and laboratory materials, operating as an intermediary in international photographic trade networks.

Company (Recipient): Obergassner K.G., 8 München 13, Postfach 310, Western Germany. A German limited partnership (Kommanditgesellschaft) involved in the photographic and optical trade, based in Munich.

Object Type: International airmail envelope with printed letterhead

Postal Route ✈️: Kowloon, Hong Kong → Munich, West Germany (6 November 1970) (Estimated Route)

Estimated Travel Time: Approximately 3-5 days (airmail via Southeast Asia and European routes)

Postal Features: Hong Kong postage stamp with Queen Elizabeth II portrait; Kowloon, Hong Kong postal cancellation (6 November 1970); "By Air Mail / Par Avion" label.

Language: English

Material: Paper envelope

Dimensions: Standard envelope format

Collection Theme: Jones Photo Supplies, Hong Kong photographic trade, Obergassner K.G., Munich photographic industry, British Hong Kong, Queen Elizabeth II stamp, Kowloon postal history, international airmail, Cold War commerce, Asian-European trade networks, 1970s photography.

Archival Significance: This 1970 envelope documents the role of Hong Kong as an international distribution hub for photographic equipment, illustrating commercial connections between Asian trading companies and West German photographic suppliers during the Cold War era.

✈️ Postal Route: Hong Kong → Germany (1970) (Estimated Route)

📍 Kowloon, Hong Kong 🇭🇰 → 🇹🇭 Bangkok, Thailand → 🇮🇳 New Delhi, India → 🇦🇪 Dubai, UAE → 🇹🇷 Turkey → 🇩🇪 Munich, Germany

📮 Jones Photo Supplies Ltd. (Kowloon, Hong Kong) → ✈️ Airmail via Southeast Asia & Middle East → 📬 Obergassner K.G. (Munich, West Germany)
Commercial correspondence | Photographic equipment trade | Queen Elizabeth II stamp | 6 November 1970 | Estimated travel time: 3-5 days

Map data © OpenStreetMap contributors (ODbL) – https://www.openstreetmap.org/copyright

Research Note:

This article is based on historical research and independent analysis of the material in the author's collection. The text has been prepared as an original interpretative study and does not reproduce copyrighted material.

This item is documented as part of the Photography in Postal History research project.
For research context, see the Research Methodology.
For academic reference, please refer to How to Cite This Archive.

Fotohous Steins German Photo Dealer Stationery

Date of use : 1955, Germany

Fotohaus Steins German Photo Dealer Stationery

This document represents a commercial correspondence conducted in 1955 between Fotohaus Steins, a firm operating in Cologne, Germany, and a customer based in the United States. The company functioned as a multi-disciplinary technical supplier active in the fields of photography, cinema, and imaging technologies. The presence of the recipient, Robert Fous, in the United States reflects the strengthening of transatlantic commercial relations between Europe and America in the post-war period.

The "Mit Luftpost / Par Avion" label on the envelope indicates that the item was sent via airmail, a method that became increasingly important in the 1950s for accelerating intercontinental business communication. The stamps in the upper right corner, issued by the Deutsche Bundespost, belong to the postal system of post-war West Germany and reflect the standard portrait-based stamp designs of the period. The postmark includes the name "Köln" along with a readable date, and also bears the inscription "Flughafen Köln/Bonn," indicating that the item was processed through an airport postal facility and integrated into the international airmail network.

✉️ Correspondence (translated from German):

"Regarding your inquiry,

Dear Mr. Fous,

We thank you for your recent letter and wish to inform you that your work was dispatched to your address in Cicero on February 10, 1955, and is therefore expected to reach you within the next few days.

We thank you once again for your order and would be pleased to remain in contact with you in the future.

Yours sincerely."

From a philatelic perspective, this envelope is notable for its use of airmail, its international routing, and its Deutsche Bundespost stamps. It also falls within the category of commercial printed envelopes and constitutes a valuable document related to the photographic and optical industries. The presence of the airmail label, clear postmark, and complete address enhances its significance for both postal history and the study of commercial networks.

Record Information

Title: Fotohaus Steins German Photo Dealer Stationery

Category: Photographic Industry History / Post-War Commerce

Subcategory: International Airmail Correspondence / Transatlantic Trade

Country: West Germany (Sender: Cologne) → USA (Recipient: Cicero, Illinois) 🗺️ Show Route

City: Cologne (Sender: Fotohaus Steins) → Cicero, Illinois (Recipient: Robert Fous)

Date of use: 1955 (dispatch: 10 February 1955)

Company (Sender): Fotohaus Steins, Cologne, Germany. A multi-disciplinary technical supplier active in photography, cinema, and imaging technologies, operating in post-war West Germany.

Recipient: Robert Fous, Cicero, Illinois, USA.

Object Type: International airmail envelope (commercial correspondence)

Postal Route ✈️: Cologne, West Germany → Cicero, Illinois, USA (10 February 1955) (Estimated Route)

Estimated Travel Time: Approximately 3-5 days (airmail via North Atlantic routes)

Postal Features: Deutsche Bundespost stamps (portrait issues); Cologne postal cancellation with "Flughafen Köln/Bonn" inscription; "Mit Luftpost / Par Avion" label; international airmail route; 10 February 1955 dispatch date.

Language: German, English (address)

Material: Paper envelope with printed business inscription

Dimensions: Standard envelope format

Collection Theme: Fotohaus Steins, Cologne photography trade, Deutsche Bundespost airmail, transatlantic commercial correspondence, 1950s West Germany, photographic equipment distribution, Cologne/Bonn airport postal facility, post-war German-American trade.

Archival Significance: This 1955 airmail envelope documents the commercial correspondence between a West German photographic supplier and a customer in the United States, illustrating the revitalization of transatlantic trade and the role of airmail in accelerating post-war international business communication.

✈️ Postal Route: Germany → USA (10 February 1955) (Estimated Route)

📍 Cologne, Germany 🇩🇪 → 🇫🇷 Paris, France → 🌊 Atlantic Ocean → 🇺🇸 New York, USA → 🇺🇸 Chicago, Illinois → 📍 Cicero, Illinois

📮 Fotohaus Steins (Cologne, West Germany) → ✈️ Airmail via North Atlantic → 📬 Robert Fous (Cicero, Illinois, USA)
Deutsche Bundespost stamps | Flughafen Köln/Bonn postmark | Mit Luftpost / Par Avion | Estimated travel time: 3-5 days

Map data © OpenStreetMap contributors (ODbL) – https://www.openstreetmap.org/copyright

Research Note:

This article is based on historical research and independent analysis of the material in the author's collection. The text has been prepared as an original interpretative study and does not reproduce copyrighted material.

This item is documented as part of the Photography in Postal History research project.
For research context, see the Research Methodology.
For academic reference, please refer to How to Cite This Archive.

Date of use : circa 1949, Germany

Lehmann & Balzer Optics Business Postcard to Agfa Photo

This document is a commercial promotional card issued by the company Lehmann & Balzer, a firm active in the field of optical glass processing and precision optical production in Germany. The card was sent from the town of Lommatzsch near Dresden in Saxony and addressed to Agfa-Photo GmbH in Hamburg. It represents an interesting example of the commercial relationships that existed within the optical and photographic industries in post-war Germany.

The sender's information on the card reads "Lehmann & Balzer – Glasbearbeitungswerk, Optische Anstalt," indicating that the company specialized in optical glass processing and the manufacture of optical components. The firm operated in Lommatzsch, a town located within the wider Dresden region. Historically, the Dresden area developed into one of the most significant centers of optical manufacturing in Germany. From the late nineteenth century onward, the region became widely recognized for the production of precision optics, scientific instruments, and photographic technologies. Companies such as Lehmann & Balzer can therefore be understood as part of this broader industrial ecosystem.

The recipient of the card, Agfa-Photo GmbH, was one of the most prominent companies in the global photographic industry during the twentieth century. The company was particularly known for the production of photographic film, photographic paper, and imaging technologies. Its commercial offices in Hamburg functioned as important nodes within the company's distribution and commercial network. Within this context, the card may represent a form of communication between a supplier of optical components and a major manufacturer of photographic equipment.

The reverse side of the card contains a promotional message addressed to the company's valued customers. In the text, the firm informs potential clients that it is once again able to supply various optical products within the limits imposed by the current availability of materials. This reference likely reflects the economic conditions of the post-war period, when industrial production was gradually being reorganized and certain raw materials remained scarce. The company lists a range of products including surface mirrors, microscope mirrors, optical glass plates, focusing screens, and various optical components used in photographic and scientific instruments.

The postage stamp on the card depicts the German writer Gerhart Hauptmann. This stamp belongs to a cultural commemorative series used in post-war Germany. The postal cancellation indicates that the card was processed in Lommatzsch before entering the postal system. Commercial postcards of this type were widely used by companies to introduce products, maintain customer relationships, and promote their manufacturing capabilities.

From a collecting perspective, the card fits within several thematic categories. It can be considered part of commercial correspondence related to the optical and photographic industries. It also represents an interesting example for collections focusing on the industrial history of optical manufacturing in Germany. Furthermore, the document illustrates the forms of business communication used during the reconstruction period following the Second World War.

In conclusion, this card represents a small yet meaningful historical document illustrating the supply relationships between optical component manufacturers and photographic technology companies in Germany. The commercial link between a manufacturing workshop in Lommatzsch and a major industrial firm such as Agfa highlights the complex network of industrial cooperation that characterized the mid-twentieth-century optical industry. Such documents serve as valuable archival materials not only for postal history but also for understanding the development of optical manufacturing and the production networks behind photographic technology.

The text of the promotional message is as follows:

To our valued customers,

We would like to inform you that, within the limits of the current material situation, we are once again able to supply the following items whenever required.

Surface mirrors, including custom-made production, for projection and photographic equipment as well as for laboratory testing devices.

All mirrors silvered on the reverse side, such as microscope mirrors, sextant mirrors, etc.

Heat-resistant concave mirrors (including the re-silvering of used concave mirrors sent to us).

Silver coating of glass submitted for optical purposes, including transparent optical components and negative holders.

Plane glass plates and parallel optical plates of all thicknesses.

Focusing ground glass screens with very fine matting.

Various medical mirrors (without mountings), such as mouth, throat, eye, ear, and forehead mirrors.

Reading magnifiers and other circular optical components.

Spherical cinema concave mirrors.

We would be pleased to have the opportunity to supply you again with one or more of these items and respectfully recommend our services to you.

LEHMANN & BALZER
Glass Processing Works – Optical Establishment

Record Information

Title: Lehmann & Balzer Optics Business Postcard to Agfa Photo

Category: Optical Industry History / Postwar Reconstruction

Subcategory: Commercial Correspondence / Supply Networks

Country: East Germany (Sender) / West Germany (Recipient)

City: Lommatzsch (Saxony) (Sender) / Hamburg (Recipient)

Date of use: circa 1949

Company (Sender): Lehmann & Balzer, Glasbearbeitungswerk, Optische Anstalt, Lommatzsch. A specialist in optical glass processing and precision optical components, serving industries including photography and scientific instruments.

Company (Recipient): Agfa-Photo GmbH, Hamburg, West Germany. A leading manufacturer of photographic film, paper, and imaging technologies, with commercial offices in Hamburg.

Object Type: Commercial promotional postcard

Postal Features: German stamp commemorating Gerhart Hauptmann; Lommatzsch postal cancellation.

Promotional Content: Lists optical products available post-WWII, including mirrors, optical glass plates, focusing screens, and medical mirrors, reflecting material constraints of the era.

Language: German

Material: Card stock

Dimensions: Standard postcard format

Collection Theme: Lehmann & Balzer, Lommatzsch, Dresden optics, Agfa, Hamburg, postwar German industry, optical components, Gerhart Hauptmann stamp, interzonal trade, industrial reconstruction.

Archival Significance: This 1949 promotional postcard documents the commercial link between an East German optical component manufacturer and West Germany's Agfa, illustrating postwar industrial supply networks and the gradual resumption of optical trade.

Research Note:

This article is based on historical research and independent analysis of the material in the author's collection. The text has been prepared as an original interpretative study and does not reproduce copyrighted material.

This item is documented as part of the Photography in Postal History research project.
For research context, see the Research Methodology.
For academic reference, please refer to How to Cite This Archive.