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Bettlach 8420-73
(EB)
Jewels: 21
Power Reserve: 45 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1938-1939
Size: 17.55 x 24.35 mm
Height: 3.75 mm
Hands: 1.12 x 0.64 / 0.18 mm
The Bettlach 8420-73 watch movement is a manual wind, sub second movement that was manufactured in the United States during 1938-1939. It was produced in a quantity of 89,000 units and is equipped with a Breguet hairspring.
The Bettlach 8420-73 features the following functions:
- American Made
- Manual Winding
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.25 x 0.090 x 240 x 8.0 mm | GR3095DBH | DBH | 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 4-12-9.25 DBH | MS-JA130 | GR 3095-DBH | Buy part |
| MAINSPRING, 21/0 | 258-533/ELG .0036 | Buy part | |
| STAFF, 15/0S | 22BB/24 | 5551/ELG P7.5 | Buy part |
| WINDING ARBOR TAP 9 | 5522/ELG | 5522/ELG | Buy part |
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