Primarflex reflex camera, about 1936. Single lens reflex camera for 120 rollfilm 2 1/4 x 2 1/4 inches, 6 x 6cm. Fitted with a Zeiss Biotessar lens F: 16.5cm f/2.8-32, Serial No 2696839, in helical focusing mount. Lens tube with tripod socket. Focal plane shutter 1/2/5/10/25/50/100/200/500/1000/B/T - single knob setting which also winds on film, drops mirror and winds on counter. Removeable rollholder in camera back, pressure frame removes to permit use of single metal. Manufactured by Curt Benzin, Gorlitz. Camera No 25_830. Primarflex Single Lens Reflex Camera