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Mark's Topcor 35mm F3.5 lens, UV mount

Another lens I bought at a Goodwill auction with a Beseler Topcon Auto 100. This one came with a nice leather tube, and seems to work OK. The green color comes from the detergent cup supporting the lens. UV refers to the lens mount, not the light frequency. Wonder if FLIR uses specially designed lenses? Bet I never find a UV to anything adapter for these. The Beseler Topcon uses a leaf shutter, instead of a focal plane like most others. So this lens mounts to an external shutter mechanism. It's incredibly complicated, impossible to get repaired, and makes a peculiar sound when operated. Mine seems to work, and I'll put a roll of film through it to find out. Eventually.

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