Rolex® calibre 520 winding pinion
Genuine, Rolex ® part # 3272 regulator for flat hairspring fits Rolex®500, Rolex®510, Rolex® 520, Rolex® 530
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Rolex®. Rolex® warranty does not apply to parts supplied by H. & W. Perrin Company Limited. Using generic parts may devalue your watch.