Rolex, Oyster Perpetual Datejust Thunderbird, ref. 1625, a two colour bracelet wristwatch, no. 3068363, circa 1971, automatic movement, adjusted to 5 positions and temperature, cal. 1570, no. D592240, black dial, applied baton markers, baton hands, centre seconds hand, rotating Thunderbird bezel, screw down back, case, dial and movement signed , on a Rolex Jubilee two colour bracelet with fold over clasp, diameter 35mm