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IWC 77
Ligne: 5.75 x 8.5'''
Jewels: 15/16
Power Reserve: 30 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1930
Size: 12.8 x 19.6 mm
Height: 3.8 mm
Hands: 1.10 x 0.60 mm
The IWC 77 watch movement is a mechanical movement with a patented space-saving train design in two layers. It offers the optional bimetallic screw balance and its specific differences in comparison to other movements within the Fontainemelon series are unclear. This movement is manually wound and was utilized during the approximate period of 1930.
The IWC 77 features the following functions:
- Manual Winding
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.45 x 0.080 x 260 x 7.5 mm | GR3923 | Manual | Buy mainspring |
| 1.45 x 0.080 x 250 x 7.5 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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