18ct pink gold Blancpain Villeret Retrograde Seconds 4063-3642-55B. Case diameter 40mm x 10.4mm deep. Automatic Blancpain caliber 7663 movement , 34- jewels, 65-hour power reserve. White dial with Roman numeral hour markers and retrograde second sweep (view here) tan croc strap with 18ct buckle. Box and papers dated November 2006. Our reference S13753.