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Alpina 6521
(Alpina Straub)
Ligne: 18.5'''
Jewels: 15/17
Power Reserve: 41 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1945
Diameter: 41.65 mm
Height: 4.7 mm
Hands: 2.00 x 1.15 / 0.26 mm
The Alpina 6521 is a mechanical watch movement with an open face calibre. It offers stem winding and setting capabilities, along with a sub second function. It is believed to feature an optional Breguet hairspring and possibly a left-handed ratchet-wheel screw. The movement is part of a group which includes the 431, 435, 439, 445, 451, and 479, although the differences between them are not known and are likely related to the varying bridge shapes. The Alpina 6521 was commonly used around 1945.
The Alpina 6521 features the following functions:
- Stem wind and set
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 2.00 x 0.200 x 475 x 16.5 mm | Manual | Buy mainspring | |
| 1.90 x 0.210 x 520 x 16.5 mm | GR5676 | 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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