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A Michel 521
Jewels: 15
Power Reserve: 34 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1912-1915
Diameter: 43.15 mm
Height: 5.15 mm
Hands: 1.65 x 0.92 / 0.22 mm
The A Michel 521 watch movement was produced in 4400 units from 1912 to 1915. It features an open face calibre, model 3, with a base plate made up of two parts, possibly adapted from tools for 12 size. The movement is equipped with a bimetallic screw balance and a Breguet hairspring. It also includes a negative stem mechanism with an adjustable switching point. Notable functions of the A Michel 521 movement include stem winding and sub-second indication.
The A Michel 521 features the following functions:
- Stem wind
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 2.05 x 0.200 x 520 x 15.5 mm | 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) |
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Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
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