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Return To ShopThe Osco 55 watch movement features Girocap combined settings for the escapement wheel and, after 1957, a ring balance and mobile stud carrier. This manual wind movement also includes sweep seconds and is equipped with Incabloc Shock Protection.
The Osco 55 features the following functions:
Dimensions | GR Reference # | End Type | Buy |
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1.40 x 0.125 x 360 x 11.5 mm | Manual | Buy mainspring | |
1.40 x 0.115 x 360 x 10.5 mm | GR3717 | Manual | Buy mainspring |
Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) | |
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