
The A Michel 521 watch movement is part of a series of movements that includes the 810 through 815, 818, 822, 823, 897, and 899. The specific differences between these movements are not known. The A Michel 521 movement features manual winding and sub second functions.
The A Michel 521 features the following functions:
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.60 x 0.100 x 315 x 9.5 mm | Manual | Buy mainspring | |
| 1.60 x 0.110 x 280 x 8.5 mm | GR4513 | Manual | Buy mainspring |
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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| Part Description | Reference # | Alternate | Buy |
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