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Waltham COLONIAL B
Ligne: 7.75 x 11.75'''
Jewels: 17
Power Reserve: 40 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1935-1937
Size: 17.65 x 26.4 mm
Hands: 1.22 x 0.66 / 0.16 mm
The Waltham COLONIAL B watch movement, produced from 1935 to 1937, is the first Curvex calibre by Alpina. It features a bimetallic screw balance and a Breguet hairspring. The hairspring and balance are made of Conoruma, which is a proprietary alloy used by Gruen that exhibits low temperature dependence. This manual wind movement also includes a sub second function.
The Waltham COLONIAL B features the following functions:
- Manual Winding
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
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Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.20 x 0.093 x 265 x 8.5 mm | Manual | 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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