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The Gruen N510CA is a manual wind mechanical watch movement, featuring a sub-second function. It is part of a range of movements that includes the Felsa 720 and 721, with specific differences between them not known. The Gruen N510CA movement was commonly used in watches produced around the 1950s period.
The Gruen N510CA features the following functions:
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.40 x 0.070 x 280 x 7.5 mm | Manual | Buy mainspring | |
| 1.40 x 0.075 x 260 x 7.0 mm | GR3591 | 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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