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Alpina 420
(Alpina Straub)
Ligne: 12'''
Jewels: 15
Power Reserve: 37 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1939
Diameter: 26.5 mm
Height: 3.95 mm
Hands: 1.40 x 0.65 mm
The Alpina 420 mechanical watch movement, which was produced in a quantity of 391,000 units in 1940, features a bimetallic screw balance and a Breguet hairspring. It was the first Omega calibre to incorporate the Incabloc shock protection system. This movement is manually wound and includes a sub-second function. It was utilized in timepieces during the period around 1939.
The Alpina 420 features the following functions:
- Manual Winding
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.35 x 0.120 x 340 x 10.0 mm | GR3515 | Manual | Buy mainspring |
| 1.30 x 0.120 x 320 x 10.0 mm | GR3311 | 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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