What is wrong with this movement?

maxbelg

How about this type of Lemania 2310 movement with a replaced Omega bridge (or modified Lemania Bridge)?

EDIT: Actually I think it's an Omega 321 and Lemania 2310 combined with parts from both movements because there are some parts which are from a 321 as well like the part I showed with an arrow which is different in the 2 movements. The serial number could also be explained this way.

Dan S

I still don't know the answer, but I do believe that the movement is not all original as I tried to imply in my first response (although now I realize I was not clear at all in that post). My assumption is that an 9M Omega serial would be from the early 1940s, and that an Omega chrono movement from that era would not look like this. Presumably it wouldn't even be shock-protected.

JimInOz

I like posts like this.

A puzzle.
Some answers.
Responses in the positive and never demeaning.
Educating the new members (and old members like me).

This our forum.

(I'm in the South of France with a few single malts under my belt, so forgive my brevity).

watchtinker

Let's see who spots what is wrong with this movement. 😎

blubarb

And I thought they just used paper clips in 6139-600x Seikos as reset lever springs 😁

stefman

So interesting! Thanks for the great post

watchtinker

Thank you for your interest. 😀

At this point one should wonder: why the original design of the minute recording spring of the 27CHRO was changed in the Lemania 2310/ Omega 320-21 version of the movement, which are essentially mass produced calibers, and on the contrary retained in a high grade movement such as the Patek CH27-70?
Strange, isn't it? 😎

dennisthemenace

No wires allowed in Geneva seal movements. Criterion number twelve.

watchtinker

Of course. However, since we should not accept criterions without sound mechanical reasons, we are essentially left with the same doubt. 😎