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Junghans 620.10
Jewels: 7
Power Reserve: 34 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1903-1933
Diameter: 43.1 mm
Height: 6.65 mm
Hands: 1.65 x 0.92 / 0.25 mm
The Junghans 620.10 watch movement was produced between 1903 and 1933, with a total of 564,000 units manufactured. It features a hunter calibre, specifically the model 6 variation. The movement incorporates a bimetallic screw balance and a Breguet hairspring. It is equipped with a negative stem mechanism, allowing for the switching between winding and setting using the stem. The Junghans 620.10 movement has a lever position setting, similar to the 210 movement, with a modified escapement. Additional functions of the movement include stem wind, which can be switched via the crown or lever, and a sub-second display.
The Junghans 620.10 features the following functions:
- Stem wind, switching by crown or lever
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 2.60 x 0.200 x 540 x 17.0 mm | 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 |
|---|---|---|---|
| JEWEL, BALANCE HOLE P12 | 12BB/5 | 447/ELG P12 | Buy part |
| MAINSPRING 17.5-4.5-21.5 DBH | MS-JA104 | GR 6781-DBH | Buy part |
| MAINSPRING 2.60-.20-540 17 | MS-JA105 | GR 6801-DBH | Buy part |
| STAFF, NEW .63 ROLLER 5.33 OA | 22BB/7 | 861/ELG P11 | Buy part |
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