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Longines 17.89M
Ligne: 11.5'''
Jewels: 17
Lift Angle: 52°
Power Reserve: 48 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1980
Diameter: 26 mm
Height: 4.45 mm
Hands: 1.40 x 0.90 x 0.21 mm
The Longines 17.89M is a mechanical watch movement designed with a unique arrangement where the train and hand gears are driven separately by the barrel. This design facilitates a low profile and accommodates a large balance wheel. However, it necessitates highly precise and shake-free gears due to the complex coupling between the second- and minute hand. The movement features manual winding and includes functions such as sweep seconds, quickset day, and quickset date. It was commonly used around the 1980s.
The Longines 17.89M features the following functions:
- Date: quickset
- Day: quickset
- Manual Winding
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
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Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.20 x 0.110 x 320 x 10.0 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) |
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Documents
Parts Listing
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