Dial case and movement signed. DIAM. 36 mm. THICKNESS 13 mm. Approx. overall length 165 mm. Made for only one year before being replaced by reference 6611 reference 6511 remains one of the rarest day-dates. Rarely found in pink gold with its matching pink gold bracelet dated 2.57 original dauphine hands and all red date it is sure to please the collector of rare Presidents.