Rolex Datejust 'Thunderbird' Ref 1625 wristwatch with date, circa 1961. Dial black, applied baton indexes with luminescent dots, centre seconds hand. Calibre cal. 1560 automatic movement, fully jewelled. Movement number: D28064. Case 18ct gold calibrated bezel and stainless steel case, screw-down back. Case number 1470612. Closure later black leather Rolex strap and buckle. Dimensions 35 mm diameter. Signed case, dial and movement. Accessories Rolex presentation box with outer packaging and cardholder.