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Osco 50
Ligne: 11.5'''
Jewels: 18
Lift Angle: 49°
Power Reserve: 46 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1959-1990
Diameter: 26.65 mm
Height: 5.8 mm
Hands: 2.00 x 1.35 x 0.85 x 0.20 mm
The Osco 50 is a mechanical watch movement that was produced from 1959 to 1990. It is closely based on the AS 1475 movement and underwent some changes over time. Early samples featured a monometallic screw balance, Breguet hairspring, and a fixed stud carrier, while late samples featured a ring balance, flat hairspring, and a mobile stud carrier. Additionally, the Osco 50 movement includes functions such as manual-wind alarm, sweep second, and an alarm function.
The Osco 50 features the following functions:
- Alarm Complication
- Manual-wind alarm
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.100 x 290 x 9.0 mm | DB | Buy mainspring | |
| 1.30 x 0.110 x 300 x 9.0 mm | GR3283DB | DB | 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
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| FOURTH WHEEL, SS HT 8.23 | Buy part | ||
| PALLET ARBOR | Buy part | ||
| STEM, ALARM | 7401/POL 2612 | 7401/POL 2612 | Buy part |
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