The German made Edixa 35mm SLR of the 1960's came in two lens mounts on various models. The more common is 42mm Pentax/Praktica universal screw mount. The other used a bayonet lens mount.

Does someone know if the bayonet mount is identical to Exakta/Exa? The Edixa shutter release is on the right hand rather than left as in Exakta, but for a pre-set lens it does not matter.