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Seiko 7424A
The Seiko 7424A watch movement incorporates the function of a sweep seconds hand.
The Seiko 7424A features the following functions:
- Sweep Seconds
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 143 | Ordinary/None | Buy staff |
| 4109 | Ordinary/None | Buy staff |
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 COMPLETE | 721/646 | Buy part | |
| CANNON PINION, HT 255 | 240/694 | 5027 | Buy part |
| MAISNPRING, 5X13X10.5 | 513H | Buy part | |
| PALLET ARBOR | 72S/86P | 714/AS 1300 | Buy part |
| ROLLER 180X75X36 | 82S/40R | 730/31 | Buy part |
| ROLLER, INCABLOC 180X75X36 | 82S/147R | 730/AS 1649 | Buy part |
| STAFF, HSP 50 | 100/60 | Buy part | |
| STAFF, INCA | 100/1284 | Buy part | |
| STEM | 200/68F | Buy part | |
| STEM, FEMALE OA6.93 SH2.45 | 360/207 | 360/AS 1393 | Buy part |
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