2709 Tresor 18k bumper

Hi, welcome to OF. The dial looks original to me as well, and the hands are replacements. They would bother me as well. How hard is it to replace them, that's hard to say. Some people have a big stash or a strong network and would find it easy. For others, it would be difficult. If you don't know where to start, you might want to contact an experienced watchmaker who is willing to help. The watch will need a service anyway, and it would be nice to replace the swan neck on the regulator.

Or if you want to take on a project, you could start studying other examples and look up reference information. You will need to know the hole sizes and lengths of the hands and then start hunting for replacements in yellow gold.

I am in the process of restoring a few bumper movements. (see my threads in the watchmaking subsection.) Typically bumper movements had triangular or what Omega refers to as Dauphin hands. The reference I have in front of me is in french and I can not remember what the name in English is. Feuilles is the other common one. Which is more leaf shaped.

The 344 movement can take #20 or #21 hands in gold. Minute hands are 0.74/0.75 diameter 0.25 length. Hour is 1.41/1,42D 0.70L sub second is 0.14/0.15D 0.63L. Note this is the length of the cannon pipe. The actual length depends on the dial tracks.

Since I am in the process of restoring a hairspring, The escapement on this looks all buggered up. As noted the swan regulator is missing and the lever shoved to the side. The hairspring looks all bunched up.

Scratches and coloration on the plates make the movement look like one of my own put together rat watch movements made from whatever I can find online.

2709 case is listed as using a 332.1975 case clamp, which usually would be closer to a 30.10 RA (332) movement. There is a large movement adapter here which might be used to adapt the smaller 27.10 RA (34x) movement. I spent nearly a year looking for the right case clamps for some of my bumpers. Kept getting 33x clamps when I needed the smaller 34x or 35x clamps. It is easy to get some of this wrong. I am often wrong on initial inspection. The references as noted are mostly in french. they are also incomplete. The movement ring could be there to strengthen the case.

If you can find examples with the same dial, the hands should be the same. Different styles of hands were sometimes used with different dials, e.g. different types of markers.