Tōsei
Tōsei Kōki (東成光機, Tosei Optical Instruments) was a Japanese company active at the beginning of the 1950s. It made a series of 6×6 folding cameras called the Frank Six and at least one model of 4.5×6 folder called the Semi Frank.
- Text is available under GNU Free Documentation License 1.3; other licenses apply to photos.
