ROLEX rare gents wristwatch Oyster Perpetual Datejust Turn-O-Graph so called Thunderbird, self winding, reference 1625, stainless steel/gold combined including jubilee- bracelet, Switzerland 1st quarter 1971, bidirectional revolving bezel with 60-minutes graduation, screwed down case back & winding crown, calibre 1570, 26 jewels, Kif-shock- absorber, screw balance, Breguet-hairspring, diameter approx. 36 mm, length approx. 20 cm, Rolex box, condition 2-3