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Bettlach 8391
(EB)
Ligne: 12'''
Jewels: 0/1
Power Reserve: 32 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1965
Diameter: 27.07 mm
Height: 4.5 mm
Hands: 1.80 x 1.10 x 0.18 mm
The Bettlach 8391 is a mechanical watch movement featuring a pin-lever escapement. It incorporates an indirect minute hand friction clutch on the barrel and has a balance cock and crown wheel that were modified over time. This movement was commonly used in manual wind watches with sweep second function during the approximate period of 1965.
The Bettlach 8391 features the following functions:
- Manual Winding
- Pin lever
- Sweep second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.110 x 300 x 9.0 mm | GR4149 | 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) |
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Documents
Parts Listing
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