Observing the huge succes of the Leica camera Rollei at that time (1930) decided to engineer and produce a small format TLR. It should be a camera which, as the Leica, would be easy and fast to operate.
Another demand was that it should be possible to operate it at eye-height. This involved a new design of the viewer hood.
After much debate about its name (Bobyflex was almost considered) they decided to just call it Rolleiflex like their existing 6x6 TLR line. However, the market soon came with other bynames like e.g. Baby Rolleiflex and Klein Rolleiflex. The models 3 and 4 are sometimes called Sports Rolleiflex because their faster Compur-Rapid shutter better suits the photographing of moving subjects.

There were 5 models manufactured :

• Model 1 from 1931 to 1933
• Model 2 from 1933 to 1934
• Model 3 from 1934 to 1938
• Model 4 from 1938 to 1941
• Kriegsmodell (War model) from 1941 to 1944 (in fact a Model 4 but built in a new serial number range)

Specifications Model 4

• Rollei internal name : K.1A, Baumuster (build) 430
• Production period : 1938 to 1941, 2174 units
• Taking lens: Carl Zeiss Jena Tessar 1:2.8 f=6cm
• Both Taking and Viewing lens now have a cover.
• Filter Bayonet Size : Both lenses, 28.5mm., Taking lens also has a bayonet size 1
• Redesigned focusing mechanism with 4 spindles. Only 1 rotation needed to run through the range
• Name shield is now cast
• Weight: 540 grams

Please notice that most Rolleiflex are uncompleted non operating Cameras. This Camera is in Mint Condition with many many accessories.