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Forster 91
(Foresta)
Ligne: 11.5'''
Jewels: 17/21
Power Reserve: 48 hrs
Frequency: 18000 vph
Type: Automatic
Period used: 1958-
Diameter: 26 mm
Height: 5.85 mm
Hands: 1.50 x 0.90 x 0.21 mm
The Forster 91 is a mechanical watch movement introduced in 1958, offering an optional micrometer regulator. It features an automatic winding mechanism, a sweep second hand, and a date function that can be quickly set by repeatedly pulling the crown. The movement has been utilized from 1958 onwards.
The Forster 91 features the following functions:
- Automatic Winding
- Quickset date function: accomplished by repeatedly pulling the crown
- Sweep second movement
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.55 x 0.110 x 11.0 mm | Auto | 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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