Rolex® calibre 800 upper balance hole jewel
Genuine, Rolex ® part # 3562 regulator - flat hairspring fits Rolex® 600, Rolex®620, Rolex®630, Rolex®635, Rolex®640, Rolex®645, Rolex®700, Rolex®710, Rolex®760, Rolex®765, Rolex®775
* 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.