Looks a bit like an ETA. I can't find the exact model, but this is close (has an offset power reserve indicator):
http://www.eta.ch/en/our-products/mechanical-movements/mecaline-specialities/eta-mecaline-specialities-2897
Looks to be a snap-on back. Nothing wrong with that, but screw-on is better.
Hard to value.
Thanks @rodabod
@clevermuscle started
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Looks a bit like an ETA. I can't find the exact model, but this is close (has an offset power reserve indicator):
http://www.eta.ch/en/our-products/mechanical-movements/mecaline-specialities/eta-mecaline-specialities-2897
Looks to be a snap-on back. Nothing wrong with that, but screw-on is better.
Hard to value.