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Seiko 1F21-1B3A
The Seiko 1F21-1B3A features the following functions:
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|
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 |
|---|---|---|---|
| BALANCE WHEEL, FRICTION | 8160/WAL | Buy part | |
| BALANCE WHEEL, RIVET | 8159/WAL | 8159/WAL | Buy part |
| FOURTH WHEEL, 12S | 8115/WAL | 8115/WAL | Buy part |
| MINUTE WHEEL | 8091/WAL | Buy part | |
| PINION, FOURTH WHEEL | 8135/WAL | Buy part | |
| SPRING, CLICK | 8082/WAL | Buy part |
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