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Certina 15-21
Ligne: 11.75'''
Jewels: 17/19
Lift Angle: 52°
Power Reserve: 41 hrs
Frequency: 18000 vph
Type: Automatic
Period used: 1951-1959
Diameter: 26.8 mm
Height: 4.3 mm
Hands: 1.15 x 0.78 x 0.16 mm
The Certina 15-21 watch movement, introduced between 1951 and 1959, is recognized for being the thinnest automatic bumper movement during its time. Its functions include automatic winding, a sub-second hand, and Incabloc shock protection. This movement set a precedent for subsequent thinner automatic movements.
The Certina 15-21 features the following functions:
- Automatic (bumper)
- Incabloc Shock Protection
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.30 x 0.100 x 300 x 9.5 mm | GR3254X | 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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