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Seiko 8Y21-510A
The Seiko 8Y21-510A watch movement is a pin lever mechanism equipped with a calendar function.
The Seiko 8Y21-510A features the following functions:
- Calendar
- Pin lever
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.65 x 0.105 x 320 x 9.5 mm | GR4745 | 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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