I'm looking for an older Mamiya Six folder parts camera, to salvage the rangerfinder assembly. I was doing some cleaning up of my own Mamiya Six Automat folder, and stupidly "wiped off" the half silver from beam splitter in the rangerfinder. It needs to be the slightly newer models with square rangerfinder window, and the rangefinder should be in good working order. Anything else about the parts camera, I don't care. Thank you!