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Ronda 1031
Ligne: 19'''
Jewels: 15
Power Reserve: 34 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1920
Diameter: 43.15 mm
Height: 5.6 mm
Hands: 1.85 x 1.10 / 0.27 mm
Base: Cortebert 526
The Ronda 1031 watch movement is an open face calibre with a Breguet hairspring and early samples featuring a bimetallic screw balance. The 526, 534, 540, and 548 movements do not have any known differences, except for varying bridge layouts. The movement's functions include stem winding and setting, sub-seconds, and it was commonly used during the period of approximately 1920.
The Ronda 1031 features the following functions:
- Stem wind and set
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 571 | Ordinary/None | Buy staff |
| 580 | Ordinary/None | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 2.10 x 0.210 x 470 x 16.5 mm | Manual | Buy mainspring | |
| 2.10 x 0.210 x 480 x 16.0 mm | GR6106 | 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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