Vintage Rolex 18k Yellow Gold Datejust. The model number of this Rolex is 1601. The case is 18k yellow gold surrounded by a 18k yellow gold fluted bezel. The case measures 36mm in diameter. Featuring a champagne dial with yellow gold baton hour markers and dolphin hands. This Rolex is accompanied by a generic strap and buckle. The inner caseback is stamped "MONTRES ROLEX S.A. GENEVA SWITZERLAND PATENTED 18K 750 1601". The movement is signed "MONTRES ROLEX S.A. GENEVA SWISS 1560 TWENTY-SIX 26 JEWELS ADJUSTED 5 POSITIONS AND TEMPERATURE 56434". The case serial is 1072XXX. Total weight : 59g. Condition: (Very Good).