True Soviet models have a "CCCP" in small print by the 6 o'clock marker, as well as printed on the movement. The automatics have it printed on the winding bridge which is usually easy to spot in pictures. Post soviet movements will say "RUS".
I forget where the manual wind movements have it at the moment. I used to know all the movement numbers by heart.
Eat your heart out
True Soviet models have a "CCCP" in small print by the 6 o'clock marker, as well as printed on the movement. The automatics have it printed on the winding bridge which is usually easy to spot in pictures. Post soviet movements will say "RUS".
I forget where the manual wind movements have it at the moment. I used to know all the movement numbers by heart.