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Working on this unbranded movement that is causing me headaches.

 

I suspect that the h/s is not the original as the collet has been brutally squashed together to stay on the staff.

 

Runs fine with dial side down but misbehaves with low amplitude when flipped.

 

And the h/s stud has to be pushed high up to have the h/s reasonbly flat.

 

There are a couple of design features that to me are a bit unusual:

 

- The screws holding the cap jewel go in from the top of the balance cock. I usually see them (annoyingly) going in from the other side and efficiently preventing any inspection of the cap jewel without removing the balance from the cock.

 

- the ”pin” defining the setting/winding positions is here part of the setting lever spring rather than the setting lever, which I find much more common.

 

If anyone can hint on the make, I am very grateful!

 

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This was a odd one, but looking at it I would say the trainbridge reminds me of an American Watch like Waltham Riverside Grade 371.
But the lack of markings makes it hard to know, but just as a push i would look at that direction.

Edited by HSL
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