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Junghans 687.70
Ligne: 16.5'''
Jewels: 15
Power Reserve: 40 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1940
Diameter: 37.2 mm
Height: 4.2 mm
Hands: 2.00 x 1.15 / 0.27 mm
The Junghans 687.70 mechanical watch movement is an open face calibre that features varying bridge shapes. It is likely to have a left-handed ratchet-wheel screw, although this is not confirmed. The differences between the Junghans 687.70 and other movements such as the 293, 299, 303, 327, 331, 335, 339, 345, and 497 are not known. The movement functions include stem winding and setting, as well as a sub-second indicator. It was in use around the 1940s.
The Junghans 687.70 features the following functions:
- Stem wind and set
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 2382 | Ordinary/None | Buy staff |
| 3674 | Incabloc | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.180 x 450 x 15.0 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) |
|---|
Documents
Parts Listing
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