35mm camera for 24 exposures 24 x 24mm. Fitted with a Zeiss Tessar lens f:3.25cm f/2.8-16. With helical focusing 0.5 meters, rotary shutter 25/50/100/300/500/T driven by clock work motor with capacity for 24 exposures. Automatic wind on from and to special cassettes. With spring loaded light traps. Optical direct vision finder no 25206. Lens number 2028764. Otto, Burning and Co, Schwelm, West. 1935 Robot camera