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Laco 550
Ligne: 17.5'''
Jewels: 17
Power Reserve: 34 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1946-
Diameter: 39.6 mm
Height: 4.4 mm
Hands: 1.60 x 0.95 / 0.21 mm
Base: Gruen 380
The Laco 550 watch movement is an open face caliber introduced in 1946. It features a Breguet hairspring and a stem mechanism without a setting-lever spring. The movement offers stem winding and setting capabilities, along with a sub-second function.
The Laco 550 features the following functions:
- Stem wind and set
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.10 x 0.190 x 420 x 15.0 mm | GR2734 | 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
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| CENTER WHEEL | 201/GRU 380 | 201/GRU 380 | Buy part |
| CENTER WHEEL, SS | 205/GRU 380 | 205/GRU 380 | Buy part |
| CROWN WHEEL | 420/GRU 380 | Buy part | |
| ESCAPE WHEEL, C/C | 705/GRU 380 | Buy part | |
| FOURTH WHEEL | 224/GRU 380 | 224/GRU 380 | Buy part |
| MAINSPRING 1.10-.19-420 15 | MS-24V | GR 2734 | Buy part |
| PALLET ARBOR | 72S/46P | 714/GRU 225 | Buy part |
| PALLET FORK AND ARBOR | 710/GRU 380 | 710/GRU 380 | Buy part |
| RATCHET WHEEL | 415/GRU 380 | Buy part | |
| REGULATOR, BREGUET | 307/GRU 380 | Buy part | |
| SCREW, LOWER BALANCE CAP JEWEL | Buy part | ||
| SCREW, RATCHET WHEEL | Buy part | ||
| SCREW, UPPER BALANCE CAP JEWEL | Buy part | ||
| STAFF | 100/389 | 723/GRU 380 | Buy part |
| STEM | 200/403F | 401/GRU 380 | Buy part |
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