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- Rolex Cal. 1600 - In-setting spring for balance-upper/lower 95019-4

| Brand | Rolex |
|---|---|
| Calibre | RX 1600 |
| International reference | 95019-4 |
| Compatibility | 1601-1602 |
| State | Never used |
| Year of production | 1964-1976 |
| Caliber diameter | 20.80 mm |
| Caliber height | 2.32 mm |
| Frequency | 19'800 A/h |
| Lift | 51° |
| Ruby | 19 |