Rolex. A stainless steel automatic wristwatch, Ref. 5500, Explorer, circa 1968
Movement: cal. 1520, automatic, 26 jewels
Dial: black, triangular, baton and Arabic indexes, centre seconds
Case: stainless steel Oyster case, screw-down crown and back, no. 1817172
Signed: case, dial and movement
Dimensions: diameter 34mm.
£3,000-£5,000