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Gruen 421SS
Ligne: 11.5'''
Jewels: 17/21
Lift Angle: 52°
Power Reserve: 46 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1954-1970
Diameter: 26 mm
Height: 5.75 mm
Hands: 2.10 x 1.30 x 0.90 x 0.22 mm
The Gruen 421SS watch movement, which was produced from 1954 to 1970, experienced various modifications throughout its manufacturing period. It is a manual-wind alarm movement that features a sweep second hand and an alarm function. This mechanical movement produced over 781,000 units during its production period.
The Gruen 421SS features the following functions:
- Alarm Complication
- Manual-wind alarm
- Mechanical Movement
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 4111 | Ordinary/None | Buy staff |
| 5150 | Ordinary/None | Buy staff |
| 3974 | Incabloc | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.100 x 320 x 9.0 mm | GR4123 | Manual | Buy mainspring |
| 1.50 x 0.100 x 300 x 9.0 mm | GR4122 | 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) | |
|---|---|---|---|
| See More |
Documents
Parts Listing
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