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Eterna 520SU
Ligne: 10.5'''
Jewels: 15/17
Power Reserve: 45 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1951-
Diameter: 23.7 mm
Height: 4.25 mm
Hands: 1.40 x 0.85 x 0.18 mm
Base: A. Schild 1200
The Eterna 520SU watch movement, used from 1951 onwards, is partially based on the AS 1200 movement. The 10BTC movement has minor differences when compared to the 10BS and 10BT movements. Notably, there is no known variant within the AS 1200 family that features an indirect sweep second function. The 10BTC movement is characterized by its manual winding mechanism and sweep second functionality. However, the specific details regarding these functions are not elaborated upon.
The Eterna 520SU features the following functions:
- Manual Winding
- Sweep second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.60 x 0.100 x 300 x 9.0 mm | GR4486 | Manual | Buy mainspring |
| 1.60 x 0.105 x 300 x 9.0 mm | GR4503 | Manual | Buy mainspring |
| 1.60 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
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