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- Rolex Cal. 3185 - Friction-spring for additional hour wheel 5226

| Brand | Rolex |
|---|---|
| Calibre | RX 3185 |
| International reference | 5226 |
| Compatibility | 3130 - 3135 - 3155 - 3175 |
| State | Never used |
| Year of production | 1988 - … |
| Caliber diameter | 28.50 mm |
| Caliber height | 6.40 mm |
| Frequency | 28'800 A/h |
| Lift | 52° |
| Power reserve | 50h |
| Ruby | 31 |