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Longines 18.50
Ligne: 18'''
Jewels: 15
Power Reserve: 36 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1930
Diameter: 40.6 mm
Height: 4.55 mm
Hands: 1.94 x 1.09 / 0.26 mm
The Longines 18.50 watch movement is an open face calibre with functions including stem wind and set, sub second, automatic, and sweep seconds. It is part of a series that includes the 785, 900, and 930 movements, but the differences between them are not known. The Longines 18.50 movement was used in watches manufactured around the 1930s.
The Longines 18.50 features the following functions:
- Automatic Winding
- Stem wind and set
- Sub Second
- Sweep Seconds
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 4504 | Ordinary/None | Buy staff |
| 1989 | Ordinary/None | Buy staff |
| 4264 | Incabloc | Buy staff |
| 4264 | Shockproof | Buy staff |
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.200 x 460 x 16.0 mm | Manual | Buy mainspring | |
| 1.50 x 0.200 x 460 x 15.5 mm | GR4352 | 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
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