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Eterna 520U
Ligne: 10.5'''
Jewels: 17
Lift Angle: 52°
Power Reserve: 41 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1960
Diameter: 23.3 mm
Height: 3.5 mm
Hands: 1.30 x 0.70 mm
The Eterna 520U is a mechanical watch movement that was manufactured around 1960. It features a mobile stud carrier, which was implemented in later versions after having an early fixed stud carrier. The Eterna 520U is a manual wind movement with a sub second function.
The Eterna 520U features the following functions:
- Manual Winding
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 4378 | Ordinary/None | Buy staff |
| 4378 | Incabloc | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.100 x 300 x 9.0 mm | GR4122 | Manual | Buy mainspring |
| 1.50 x 0.105 x 300 x 9.0 mm | GR4134 | 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 |
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) | |
|---|---|---|---|
| See More |
Documents
Parts Listing
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