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Eterna 1020S
Ligne: 11.5'''
Jewels: 16
Lift Angle: 59°
Power Reserve: 40 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1955
Diameter: 25.6 mm
Height: 4.1 mm
Hands: 1.75 x 1.00 x 0.18 mm
Base: Wittnauer 11TN
The Eterna 1020S watch movement is a manual wind mechanical movement with sweep seconds. It is known to have an optional Breguet hairspring and was commonly used around the period of 1955.
The Eterna 1020S features the following functions:
- Manual Winding
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 2124 | Ordinary/None | Buy staff |
| 2123 | Incabloc | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.30 x 0.115 x 440 x 12.0 mm | GR3301 | Manual | Buy mainspring |
| 1.30 x 0.110 x 320 x 10.0 mm | Manual | Buy mainspring | |
| 1.25 x 0.100 x 360 x 9.5 mm | GR3113 | 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 |
|---|---|---|---|
| MAINSPRING 1.25-.10-360 9,5 | MS-3511R | GR 3113 | Buy part |
| PALLET ARBOR | 72S/77P | 714/MST 410 | Buy part |
| ROLLER 195X85X42 | 82S/66R | Buy part | |
| STAFF | 100/871 | Buy part |
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