Rolex® calibre 635 ratchet wheel
Genuine, Rolex ® part # 3613 top dial screw fits Rolex® 600, Rolex®620, Rolex®630, Rolex®635, Rolex®640, Rolex®645
* 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.