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Ronda 1137-21
Ligne: 10.5'''
Jewels: 15
Power Reserve: 36 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1925
Diameter: 23.75 mm
Height: 4.3 mm
Hands: 1.30 x 0.80 / 0.24 mm
The Ronda 1137-21 watch movement is part of a series of movements with various bridge layouts. These movements are likely to be signed as AS 340, and older data sheets may list them with individual designations. The differences between the Ronda 1137-21 and other movements in this series, such as the 302, 303, and 361, are not known. The Ronda 1137-21 movement features manual winding, a sub-second function, and was commonly used around 1925.
The Ronda 1137-21 features the following functions:
- Manual Winding
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.60 x 0.105 x 300 x 9.0 mm | GR4503 | Manual | Buy mainspring |
| 1.50 x 0.100 x 290 x 9.0 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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