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Unitas 253
Ligne: 16'''
Jewels: 15/17
Lift Angle: 42°
Power Reserve: 30 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1940
Diameter: 35.6 mm
Height: 4.25 mm
Hands: 1.75 x 0.90 mm
Base: Roamer 240
The Unitas 253 watch movement is characterized by minor differences in bridge shapes compared to the Roamer 249 movement. It features stem wind and set mechanism, a sub-second function, and was commonly used during the approximate period of 1940.
The Unitas 253 features the following functions:
- Stem wind and set
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 1807 | Ordinary/None | Buy staff |
| 1805 | Ordinary/None | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.70 x 0.170 x 360 x 13.5 mm | GR5042 | Manual | Buy mainspring |
| 1.70 x 0.170 x 350 x 13.0 mm | 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
| Part Description | Reference # | Alternate | Buy |
|---|
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