Rolex "Oyster Perpetual Day-Date Superlative Chronometer officially certified", Movement No. 2125187, Case No. 8762161, Ref. 18038, Cal. 3055, 36 mm, circa 1985

A gentleman's automatic wristwatch with day and date indicator
Case: 18k gold, screw back ref. 18000, reeded gold bezel, screwed "Twinlock" winding crown, 18k "President" gold bracelet with deployant clasp. Dial: black, applied luminous indexes, centre seconds, luminous baton hands. Movm.: rotorwind movement, rhodium-plated, ground, 6 adj., 27 jewels, Glucydur balance, incabloc shock protection for balance and escape wheel.