Here is a 1916(ish) Omega trench watch I did on Saturday - for near enough its 100th birthday. I also posted this over on WUS, but this is its spiritual home. It is fitted with a 13 SB, a 13 Ligne movement and the watch is 35mm which is a nice size. The movements are very nicely made with heavy frosted gold plates and robust yet nicely finished components. I'll start with an (after) wrist shot.



Before photos, and I’ll be working on the one on the left - the one on the right is
a little earlier in the year and I'll get to some other time.




...it begins...



Omega Calibre 13 SB



Spot the problem…



Here, let me zoom in for you. The jewel for the seconds pinion is fractured.



Opened jewel bezel.



Testing new jewel for fit.



Rubbing in new jewel.



New jewel fitted.



Testing endshake with new jewel. All good.



Out of the cleaning machines.



Assembly begins...



Train fitted.



New alloy mainspring fitted into barrel.



Barrel Bridge fitted, lower balance jewel in place, nice ratchet spring.



Assembly of the balance cock.



Running.



Final assembly of motion works. It turns out I had made an error here, and had to remove the barrel bridge to fit the winding pinion - on most movement this can be fitted from the front, not so in this case.



Motion works in place, ready for the dial.



Dial fitted, now for the hands. Steiner hand press.



Original hands cleaned, straightened and fitted, new sub second hand. Edge nibble at 4:30 is invisible once the bezel is fitted.



I also had to swap the stem and crown - this is the original type (I borrowed it from the other one - but only temporarily). The stem that was fitted was home made, was not threaded and restricted the proper motion of the winding pinion - it was also shaped a bit like a banana.




On a temporary strap, it is a little narrow - lugs are 12mm.



On the wrist for the day - running beautifully.

 

Good result!

Can we see some pics of the hand press?

 

Really nice presentation! Thanks!

 

Thanks all!

Here is the Steiner hand press - probably 1960s. They are still making this model - at least Bergeon are, and there is also a recent Chinese copy. You need the Slick/Bergeon movement holders that fit in the base, as well.

 

Very nice and good job! Any chance the donor movement is still available? Only in need of the time-setting part ...

 

I got one just like yours but the Bergeon version, im in persuit of movementholders for it, if you got any tip on where I can buy them, I would be grateful!