The "Mamiya" is the earliest 35mm SLR produced by Mamiya. It has no further designation, and only very few examples are known to be still existing. Since my very first SLR, at the age of twelve, was a Mamiya ZE, I am genuinely interested in all Mamiya cameras and lenses. Thus when in sumer 2019 I saw this stange looking "Mamiya" SLR, I immediately was intrigued and - thanks to a very friendly seller! - was able to get the camera. Its shutter / mirror mechanism is defective, but the lens including its semi-automatic diaphragm is working perfectly.