Rolex, Oyster Perpetual Date, Sea Dweller 4000 ft = 1220 m, Superlative Chronometer Officially Certified, case No. 8391119, Ref. 16660. Sold in 1985. Fine, center seconds, self-winding, water resistant, stainless steel wristwatch
Rolex Sea-Dweller watch: Oystersteel and yellow gold - M126603-0001