
Later small pointed pusher was interchangeable with the M2. Specifically to fit the M3 style top plate - later M cameras all had the short lever to fit both M2 and M3. Longer to fit properly without separation.
This is the lever above the self timer. Larger diameter for greater strength - early versions with thin shaft. ASA 1000-marking - Ball bearing locking pins to hold onto housing - later cameras with 1,300 ASA no longer have the lock. Engraved on the inside chassis to match the top plate - later cameras no longer had this. Double glass, inner seal - later cameras with single glass/no seal. Nice additional feature which early cameras did not have. Unique to the early M3, mounted with x2 Screw on housing, riveted, will never break and spin - later cameras with single screw, round lugs also used on other M2, M4 bodies. Later cameras have the single stroke long arm also used on the M2 with a ratchet "click, click, click." sound return. specific for the early M3, shorter arm, quiet return.
What they don't know is that there is a small batch of approximately 4,000 cameras made in 1957 that have the characteristics which make it the BEST of all the M3 cameras ever made.
Many know that the M3 is the finest Rangefinder camera of all time…TRUE.