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Certina 15-21
Ligne: 12.75'''
Jewels: 17
Power Reserve: 42 hrs
Frequency: 19800 vph
Type: Automatic
Period used: 1949-1953
Diameter: 28.5 mm
Height: 6.1 mm
Hands: 1.40 x 0.75 x 0.18 mm
The Certina 15-21 watch movement, part of the 28.10 and 30.10 family, was produced from 1949 to 1953, with over 1,300,000 units manufactured between 1943 and 1955. It features an automatic (bumper) mechanism, a sweep seconds function, and a date display. The movement is also equipped with a calendar feature.
The Certina 15-21 features the following functions:
- Automatic (bumper)
- Calendar
- Date
- Sweep second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.10 x 0.095 x 300 x 9.0 mm | GR2605X | Auto | Buy mainspring |
| 1.10 x 0.100 x 250 x 8.5 mm | Auto | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) | |
|---|---|---|---|
| See More |
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
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