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Certina 28-451
Ligne: 11.5'''
Jewels: 25
Power Reserve: 38 hrs
Frequency: 21600 vph
Type: Automatic
Period used: ~1975
Diameter: 26 mm
Height: 4.6 mm
Hands: 1.50 x 0.90 x 0.21 mm
Base: Forster 222
The Certina 28-451 watch movement is a detached manual wind movement featuring an indirectly driven minute hand, allowing for a relatively big balance and a low profile. It utilizes a Type VS single-part 0.6mm higher rotor, and at this time, the differences between the 2304 and 1092 variations are not known. The movement includes automatic winding, a sweep second hand, and a date function that can be quickly set by repeated pulling of the crown. The Certina 28-451 movement was primarily used during the period of approximately 1975.
The Certina 28-451 features the following functions:
- Automatic Winding
- Date: quickset by repeated pulling the crown
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
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Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.10 x 0.130 x 10.0 mm | Auto | 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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