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Osco 300
Ligne: 10.5'''
Jewels: 15
Power Reserve: 36 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1925
Diameter: 23.75 mm
Height: 4.3 mm
Hands: 1.30 x 0.80 / 0.24 mm
The Osco 300 watch movement, which was likely produced around 1925, features various bridge layouts. Some of these layouts may be labeled as AS 340 in old data sheets, but each layout may have its own unique designation. Not much is known about the differences between the Osco 300 movement and other similar movements such as the 302, 303, 311, 313, 323, 324, and so on. The Osco 300 movement is a manual wind movement with a sub second function.
The Osco 300 features the following functions:
- Manual Winding
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
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Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.100 x 290 x 9.0 mm | Manual | Buy mainspring | |
| 1.40 x 0.105 x 300 x 9.0 mm | GR3680 | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
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