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Seiko 7731-5091
Jewels: 21
The Seiko 7731-5091 watch movement is an open-face calibre movement, manufactured in America, and features 21 jewels.
The Seiko 7731-5091 features the following functions:
- American Made
- Open Face Calibre
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 2.80 x 0.180 x 540 x 17.0 mm | GR6974T | T | 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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