I bought one of these 35mm folding range finder cameras 30 years ago for $40.00. It is in the same condition as when I got it and never used it as the shutter curtain broke and there isn't any parts to be found ,,at least not where I live. I have always been interested in seeing how good it is. I was offered $900.00 for it 2 years ago as is by a camera repair tech.,but I couldn't part with it. The lens is Tessar f:3.5 5 cm Carl Zeiss Jena Nr and the glass is perfect. The body has some signs of wear but nothing to bad and the bellows is in great shape as well. All the nickle plated parts are also in great shape and the range finder works perfect as well and this was made in the mid to late 1930 era durring the second world war in Germany. So if anyone has one I would love to hear from you.,,,,,,,,,,,,,Roy