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Marvin 520
Ligne: 10.5'''
Jewels: 17
Power Reserve: 45 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1964
Diameter: 23.6 mm
Height: 3.85 mm
Hands: 1.50 x 0.90 x 0.20 mm
The Marvin 520 watch movement is a manual-wind movement with a sweep second function, featuring shock protection and sweep seconds. The movement incorporates a stem mechanism without a setting-lever spring and utilizes Diafix combined settings for the escapement wheel. The specific differences between the 66B, 436, and 4361 movements are unknown. It was produced around 1964.
The Marvin 520 features the following functions:
- Manual Winding
- Shock Protection
- Sweep second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.35 x 0.110 x 380 x 9.0 mm | GR3510 | 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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