Greubel Forsey Double Tourbillion 30° Methodology (01855) guide-wind watch includes a 47.5mm 18k rose gold case surrounding a skeletonized dial on a brown alligator strap with an 18k rose gold deployant buckle. Purposes come with hours mins small-seconds tourbillon and tool reserve indicator. This watch comes entire with box and papers. We back this watch with a fifteen-month guaranty! [amz_corss_sell…