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.
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.