Rolleiflex 2.8 Prototype

extremely rare prototype of the first Rolleiflex 2.8 camera (later called 2.8A), taking lens engraved: Schneider-Kreuznach 1:2.8/80 2681294 (no serial number, viewing lens engraved: Heidoscop-Anastigmat 1:2.8 f=8cm Nr.817855, both bayonett III lenses stand closer together than later versions, Compur-Rapid shutter in good working order, small focusing knob (similar to Rolleicord), according to Claus Prochnow the Rolleiflex 3.5 started with serial number 1100000, brown everready case with strap - this could be the very first Rolleiflex 2.8 !