A while ago I purchased this little 6x6cm camera. At least here in Germany it is very rare, and it's very special: - 6x6cm SLR, and it's really, really tiny - Instant return mirror (made in 1957) - Comparatively silent cloth focal plane shutter up to 1/500 - Interchangeable lenses - screw mount, no automatic diaphragm, but reasonably sharp and contrasty - Focal lengths from 52mm (widest in 1957) up to 300mm; I own the normal lens and 150mm telephoto - No interchangeable magazines - WLF and screen cannot be exchanged - No crank, knob wind - There were extension rings and even a bellows, and an adapter to use the lenses on Hasselblad 1000F bodies. The engineer who constructed Mrs. Thingy was Heinz Kilfitt, designer of the Robot, the Mecaflex and probably best known for his lenses. It's not the only camera he designed for a japanese company. It seems to be the tiny sister of the Kowa 6x6. It's hard to find information about this on the web, the best source is this page still: http://rick_oleson.tripod.com/index-36.html I cannot second some of the statements. My copy of this camera works fine in cold weather, and the shutter is precise enough for some Tmax 100 films that I exposed and that like to be exposed properly. Does anyone know more about this little gem?