
The Aurore 39 watch movement is an open face caliber that was in use from 1908 onwards. It offers options such as a bimetallic screw balance and a Breguet hairspring. Although the differences between the 9 and 27 calibers are not known, the Aurore 39 movement features stem winding and setting, along with a sub-second function.
The Aurore 39 features the following functions:
| Ronda Reference # | Shock System | Buy |
|---|---|---|
| 3051 | Ordinary/None | Buy staff |
| 1712 | Incabloc | Buy staff |
| 1713 | Incabloc | Buy staff |
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 2.05 x 0.200 x 520 x 17.0 mm | Manual | Buy mainspring | |
| 2.00 x 0.220 x 540 x 18.5 mm | GR5928 | 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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| Part Description | Reference # | Alternate | Buy |
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