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Certina 15-20
Ligne: 12.75'''
Jewels: 17
Lift Angle: 50°
Power Reserve: 42 hrs
Frequency: 19800 vph
Type: Automatic
Period used: 1945-1949
Diameter: 28.5 mm
Height: 5.35 mm
Hands: 1.40 x 0.75 mm
Base: Omega 350
The Certina 15-20 watch movement, part of the 28.10 and 30.10 families, was produced from 1943 to 1955 with a total production of over 1.3 million units. In 1949, it was rebranded as the 28.10RA SC PC to 350. The movement features automatic (bumper) winding and a sweep second function. It was utilized during the period of 1945-1949.
The Certina 15-20 features the following functions:
- Automatic (bumper)
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.10 x 0.095 x 300 x 9.0 mm | GR2605X | Auto | 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) |
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Documents
Parts Listing
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