Well, I don't know how valuable it is. I paid $6 for it and while the rangefinder and linked focus work good, the film advance is good, the shutter and blades are good etc., the lens is rather moldy. The rear part came apart fairly easily and I was able to clean it up but it was surprisingly scratched up (just micro scratches but lots of them). I'l certainly try not to damage it but I'm not sure I'm going to spend much money for CLA either.