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Brac 504
Ligne: 10.5'''
Jewels: 17
Lift Angle: 50°
Power Reserve: 37 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1950
Diameter: 23.7 mm
Height: 5.0 mm
Hands: 1.40 x 0.80 x 0.21 mm
The Brac 504 watch movement, manufactured around 1950, offers a range of features including manual winding, a center seconds hand, and the ability to reset the seconds hand to zero. It is available in both sweep seconds and non-sweep seconds variations. Optional free hairsprings were provided with early samples of this movement.
The Brac 504 features the following functions:
- Center Seconds
- Manual Winding
- Resettable to zero
- Sweep seconds and non-sweep seconds variations
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 1976 | Ordinary/None | Buy staff |
| 2964 | Incabloc | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.110 x 300 x 9.0 mm | GR4149 | 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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