Usually Jacob & Co. is known for diamond heavy watches but this watch, the Quentin
is about the mechanics and not the sparkle. Similar in style to the Cabestan, this watch has a vertical mechanical movement with a manual winding escapement mounted in a tourbillon cage. This cage is suspended without roller bearings and positioned vertically and winds with an integrated key, external hand key or motorized in the box. The indications of hours, minutes and power reserve are made by vertical disks assembled coaxially. The watch is done is a limited edition of 99 pieces in white gold, 18 pieces in rose gold and 18 pieces in magnesium, platinum on request.
[via Dream Watches blog