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Osco 72
Ligne: 18.5'''
Jewels: 15/17
Power Reserve: 41 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1945
Diameter: 41.65 mm
Height: 4.2 mm
Hands: 1.98 x 1.12 / 0.26 mm
The Osco 72 is an open face calibre watch movement with optional Breguet hairspring. It features varying bridge shapes and is likely equipped with a left-handed ratchet-wheel screw. Known differences between the Osco 72 and other calibres such as 233, 237, 241, 247, 253, 257, 263, 269, 275, 443, 453, 475, and 481 are not specified, suggesting that these numbers may be catalog designations correlating to distinct bridge shapes. This movement offers stem winding and setting functionality, along with a sub-second function. It was predominantly used around 1945.
The Osco 72 features the following functions:
- Stem wind and set
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.210 x 490 x 17.0 mm | Manual | Buy mainspring | |
| 1.50 x 0.210 x 480 x 15.5 mm | GR4365 | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
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