Damga tarihi :1951 Malaya

Chin Kong Optical Co.antetli zarf.Alıcı ise American Optical Co. firmasıdır. 1856 yılında kamera kutuları,stereoskoplar ve fotoğraflar aksesuarları üretmek için kurulmuştur. (New Haven,Ct,Amerika)

Date of use : 1951 Malaya

Business stationery.Used by the company Chin Kong Optical Co.The letter was adressed American Optical Co.This company was founded in 1856 New Haven Ct in USA to manufacture camera boxes,stereoscopes and photographic accessories.