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Unitas 501
Ligne: 16.5'''
Jewels: 15
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1940
Diameter: 37.2 mm
Height: 3.7 mm
Hands: 2.04 x 1.15 / 0.28 mm
The Unitas 501 watch movement is an open face calibre with varying bridge shapes. The specific differences between the 287, 289, 295, 307, 341, 349, 351, 353, 355, and 493 are not known. The movement allows for stem winding and setting, features a sub second function, and was commonly used around 1940.
The Unitas 501 features the following functions:
- Stem wind and set
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 3263 | Ordinary/None | Buy staff |
| 3264 | Supershock | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.30 x 0.170 x 460 x 14.0 mm | GR3395 | Manual | Buy mainspring |
| 1.30 x 0.170 x 410 x 14.0 mm | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) | |
|---|---|---|---|
| See More |
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
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