The 1957 Leica M3 blends the best features from early and late Leica M3 cameras:
- Double stroke film advance lever with shorter arm (allows you to advance the film and simultaneously hold the camera with one hand).
- Silent return on the film advance (later models produce a ratcheting sound when returning).
- Modern shutter speeds (earlier models have the older speeds: 1, 1/2, 1/5, 1/10, 1/25, 1/50, 1/100, 1/200…).
- “Buddha” (aka “Rabbit Ear”) lugs riveted (not screwed) to camera — no loosening or spinning of lugs.
- Film back door protrusions/pins to prevent door from flapping open when changing film (only available in cameras with serial numbers 854000-858000).
- Double glass eyepiece with inner seal (later models have single glass with no seal).
It’s now 60 years old and still working like new.
(for more information see here)