Rolex. A fine 18K gold automatic dual time wristwatch with sweep centre seconds, date, bracelet and box

Rolex. A fine 18K gold automatic dual time wristwatch with sweep centre seconds, date, bracelet and box
Signed Rolex, Oyster Perpetual, GMT-Master, ref. 1675, case no. 5'873'437, manufactured in 1979
Cal. 1575 nickel-finished lever movement, 26 jewels, brown dial, luminous dot, baton and dagger numerals, luminous hands, central hand for the second time zone, sweep centre seconds, magnified window for date, tonneau-shaped water-resistant-type case with revolving brown bezel calibrated for 24 hours, screw back and screw down crown, 18K gold Rolex Oyster bracelet, case, dial and movement signed
39 mm. diam.