Contax I Prototype

Formerly unknown prototype of the Contax I camera. The camera has no series number and differs in many details from the later series model Contax I. The main difference is that it was made for the exclusive use of the Zeiss daylight spool film (with paper leaders on both ends) and lacks any device for rewinding the film (what later became the rewinding knob is a flat disc that only allows for checking the film transport but is unsuitable for rewinding, and there is also no lever to disengage the film transport in the bottom of the camera back). The lens mount helicoid allows for near focussing up to 0,75m (as opposed to 0,8m in preseries and 0,9m in series models). The infinity stop release knob of the distance meter is situated centrally in the middle of the camera front (as opposed to its usual position next to the milled wheel of the coupled distance meter) and is differently shaped - it is broad and flat - while its function is exactly the same. There is no arrestor spring-catch for the lens, it seems that the lens was simply bayonetted into the mount without clicking home (the small screw that holds the lens in place must be a later addition). Unknown shape of the threaded shutter release button. The distance meter assembly is already of the series type (its mechanism is basically working, yet misaligned and needs repair). The shutter is running, but needs service as well. With unengraved Carl Zeiss Jena 5cm f/3,5 Tessar - sensational new discovery of a original and unique Contax I prototype!