Rolex: A sailing wristwatch Oyster Perpetual Yacht-Master model 168628, case marked 750, signed Rolex calibre 2235 automatic movement numbered 0720530, round dial with applied stainless-steel edged lume plots and baton hour markers, date aperture at 3, outer seconds track, lume-filled Mercedes hands, centre seconds hand with lume plot, bezel with count-up scale, on an Oyster bracelet strap with signed foldover clasp marked 750, no box and papers (Case: 35mm excluding crown) Previously sold at Bonhams, Knightsbridge, 14th September 2010, lot 113