Rolex "Oyster Perpetual DAY-DATE Superlative Chronometer officially certified", Case No. 1634324, Ref. 1803, Cal. 1556, 36 mm, circa 1967

A gentleman's very fine automatic wristwatch with day and date indicator - with original box
Case: 18k gold, screw back, reeded gold bezel, screwed "Twinlock" winding crown, 18k gold "Oyster" bracelet ref. 53B. Dial: gilt, applied luminous gold indexes, centre seconds, indicators for day and date, luminous baton hands. Movm.: rotorwind movement, rhodium-plated, ground, 6 adj., 26 jewels, Glucydur screw balance, shock protection for balance.