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IWC 431
Ligne: 10.5 x 11.5'''
Jewels: 15
Power Reserve: 43 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1938-
Size: 23.45 x 25.45 mm
Height: 4.1 mm
Hands: 1.22 x 0.66 / 0.16 mm
Base: Gruen 405
The IWC 431 watch movement, produced from 1938 onwards, incorporates a Breguet hairspring and features a stem mechanism that lacks a setting-lever spring. This manual wind movement also includes a sub-second function.
The IWC 431 features the following functions:
- Manual Winding
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.15 x 0.110 x 250 x 9.0 mm | Manual | Buy mainspring | |
| 1.10 x 0.110 x 260 x 8.5 mm | GR2632 | 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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