ROLEX gents wristwatch Oyster Perpetual Datejust, self winding, reference 16013, Switzerland around 1980, superlative chronometer officially certified in stainless steel/gold combined including jubilee- bracelet, screwed-down case back & winding crown, champagne coloured dial with raised indices, display of hours, minutes, sweep seconds & date under loupe-glass, 27 jewels, calibre 3035, flat rim balance, flat hairspring, Kif-shock-absorber, diameter approx. 36 mm, length approx. 20,5 cm, signs of use due to age, original box without inlay & users manual enclosed, condition 2-3