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Ronda 7121
Ligne: 9.75'''
Jewels: 15
Power Reserve: 40 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1940
Diameter: 22.05 mm
Height: 3.75 mm
Hands: 1.40 x 0.80 / 0.18 mm
The Ronda 7121 is a mechanical watch movement with a manual wind mechanism and sub second function. It belongs to a group of movements identified by the numbers 110-113, 117-119, 128, and 159, although the differences between these movements are not known. These numbers likely refer to variations in bridge shapes. The Ronda 7121 was commonly used in watches around the 1940s.
The Ronda 7121 features the following functions:
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.60 x 0.090 x 260 x 8.0 mm | GR4463 | Manual | Buy mainspring |
| 1.60 x 0.090 x 250 x 8.0 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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