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Unitas 253
Ligne: 5.75 x 8.5'''
Jewels: 15/17
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1950
Size: 12.75 x 19.2 mm
Height: 3.9 mm
Hands: 1.20 x 0.60 mm
The Unitas 253 watch movement features a ratchet mechanism on the dial side, as well as a crown mechanism with a rocker bar. Additionally, the rocker in this movement is equipped with only one intermediate wheel. The differences between the Forster 622 and 630 are not specified. This movement operates as a manual wind mechanism, with a period of usage estimated around 1950.
The Unitas 253 features the following functions:
- Manual Winding
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 3737 | Ordinary/None | Buy staff |
| 3894 | Ordinary/None | Buy staff |
| 4124 | Ordinary/None | Buy staff |
| 4124 | Kif | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.20 x 0.090 x 240 x 7.5 mm | GR2894 | Manual | Buy mainspring |
| 1.20 x 0.090 x 220 x 7.5 mm | Manual | Buy mainspring | |
| 1.20 x 0.090 x 220 x 7.0 mm | GR2893 | 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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