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Junghans J77
Ligne: 6.75 x 8'''
Jewels: 17
Power Reserve: 40 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1943
Size: 15.3 x 18.2 mm
Height: 3.4 mm
Hands: 1.10 x 0.60 mm
The Junghans J77 watch movement is a manual wind calibre that was in use around 1943. It is considered equivalent to other similar movements such as the Aurore-Villeret 120, Bulova 6AH, FHF 120, and their variants. Specific design details differentiate the Bulova calibres from the FHF calibres, suggesting that the ebauches for the Junghans J77 may have originated from Aurore-Villeret. The differences between the various calibres listed, including 120 through 122, 122N, 124, 125, 127, 1220, and 1221, are not known.
The Junghans J77 features the following functions:
- Manual Winding
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
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Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.40 x 0.080 x 250 x 7.5 mm | Manual | Buy mainspring | |
| 1.40 x 0.080 x 240 x 7.0 mm | GR3607 | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
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