Sapphire and diamond lady's wristwatch, c. 1960s featuring a Rolex manual movement, with a later addition Percy Marks 18ct white gold diamond pave set case, with a sprung hinged lid featuring claw set round brilliant cut diamonds and blue sapphires, 9ct white gold bracelet featuring single cut and round brilliant cut diamonds, estimated total diamond weight 1.74ct, F/G colour, Vs/Si clarity, estimated total sapphire weight 2.10ct, signed dial, movement, case stamped '18K 0.750', with box