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Alpina 331
(Alpina Straub)
Ligne: 10.5'''
Jewels: 15
Power Reserve: 37 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1940
Diameter: 23.7 mm
Height: 4.05 mm
Hands: 1.30 x 0.65 / 0.21 mm
The Alpina 331 watch movement is a manual wind movement with a sub-second function. It was commonly used in timepieces around the year 1940. There are variations in bridge shapes among the Unitas movements, including the 148, 150-152, 154, 156-158, 160, and 165, but specific differences between these models are not known.
The Alpina 331 features the following functions:
- Manual Winding
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.110 x 300 x 9.0 mm | GR4149 | Manual | Buy mainspring |
| 1.50 x 0.100 x 290 x 9.0 mm | Manual | Buy mainspring | |
| 1.50 x 0.105 x 280 x 9.0 mm | GR41332 | Manual | 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
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