Rolex, Oyster Perpetual Datejust, a stainless steel wristwatch, circa 1960, ref. 1603, no. 1431877, the two piece screw down case with brilliant cut diamond set bezel, the black dial with brilliant cut diamond dot numerals, baton hands and date aperture, 26 jewel Rolex automatic movement adjusted to five positions and temperature, cal. 1570, no. D09139, the case 43mm including lugs, 37mm diameter, on an associated stainless steel block link bracelet with fold over clasp