FRANCK MULLER CRAZY HOURS REF. 7851 CH IN WHITE GOLD - From 2005 Reference N° 7851 CH Serial N° 248 Year: 2005 Circa Material: 18k white gold Weight: 106g Dimensions: 35x49mm Calibre: Automatic Crystal: Sapphire Bracelet: Leather with white gold buckle Accessories: Original Box, guarantee and service from 2017 Very rare, iconic and fun Crazy Hours in white gold by Franck Muller, currently working.