Homage Forum

What parts are interchangeable between ETA 6497 and A6497, and between Cortebert 620 and Molnijas?

I’ve been looking for this info but didn’t find clear answers. Since we also the best experts here at H-F I would be thankful for some help.

A humble beginning:
The crown wheel screw is compatible between ETA 6498 and its clone.
...and it is left-hand thread. Guess how I know

I think you made a post somewhere with that

I’m expecting that the earliest Molnija with 15jewels can share many parts with the Cort