BRANDS: Blancpain, Frédéric Piguet
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The Cal. 13 family of movements by Frédéric Piguet (later Manufacture Blancpain) are a series of hand-winding calibres. Measuring 30.60 mm (13 ligne) in diameter, they feature traditional pocket watch bridges but some have been updated with a silicon balance spring.
| Name | Diam. | Height | Power Reserve (Hours) | Jewels | Parts | Speed Hz. | Silicon Balance Spring | Features |
|---|---|---|---|---|---|---|---|---|
| 13R1 | 30.60 | 4.57 | 192 | 28 | 211 | 4 | Date, Power Reserve, Small Seconds | |
| 13R3A | 30.60 | 4.30 | 192 | 28 | 190 | 4 | Yes | Power Reserve |
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