ltm

Just arrived! Took a chance on what was described as badly scratched lens only to find a few whispy cleaning marks. I love it when sellers over emphasize the flaws! Only real bummer was the dent in the filter ring. And now for some pics!

Hello, I have a wartime CZJ Sonnar 5cm f1,5 in Leica Thread Mount serial # 2870001 which seems to date it approx. from 1942. I need advice on how to unscrew the optic module to check for matching serial numbers and perhaps determine it's authenticity. I am loathe to dismantle/damage the lens due...