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The Gruen 510R is an open face calibre watch movement from approximately 1940, featuring stem wind and set functions along with a sub second display.
The Gruen 510R features the following functions:
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.60 x 0.170 x 460 x 14.0 mm | GR4652 | Manual | Buy mainspring |
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
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