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Hamilton 780
Ligne: 19.5'''
Jewels: 3
Power Reserve: 14 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1935
Diameter: 44 mm
Height: 8.1 mm
Hands: 1.35 / 1.35 mm
The Hamilton 780 watch movement is an open face calibre with a pin-lever escapement and a stop function controlled by a pillar wheel. The movement's pendant is mounted directly on the movement itself. It is worth noting that early calibres of this watch movement lack consistent and reliable documentation, which has resulted in limited information regarding their features and specifications. However, based on reasonably known calibres, the Hamilton 780 offers various functions, including a timer with a duration of 60 seconds (with an accuracy of 0.2 seconds) and a 30-minute duration. Additionally, there is an optional version with a 30-second timer (with an accuracy of 0.1 seconds) and a 15-minute duration. The movement also enables an additional timer function, allows for stem winding, features a sweep second hand, and is estimated to have been used around 1935.
The Hamilton 780 features the following functions:
- 15min
- 30 minute counter
- 30s (0.1s)
- 60s (0.2s)
- Additional timer
- Pillar wheel
- Pin lever
- Stem wind
- Sweep second
- Timer Function
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.90 x 0.190 x 500 x 15.5 mm | GR5644 | 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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