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Seiko 4207-503B
Ligne: 8.75'''
The Seiko 4207-503B watch movement features a Pin Lever escapement system and a Calendar function.
The Seiko 4207-503B features the following functions:
- Calendar
- Pin lever
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 COMPLETE | 721/1973 | 721/1973 | Buy part |
| CLUTCH LEVER | 435/847 | 435/1*/BET 8300 | Buy part |
| SET LEVER/AXLE .67 THREAD | 443/1280 | 443/1-BET 8350 | Buy part |
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