Rolex Oyster Perpetual Airking Ref 5504, an oversized stainless steel wristwatch circa 1959, dial: silvered, calibre: cal. 1530 automatic 25 jewels, movement number: 04871, case: tonneau-form, screw-down back and crown, Closure: stainless steel link bracelet, dimensions: 36 mm, signed: case, dial and movement, accessories: none.