A Patek Philippe Calatrava 18ct yellow gold gentleman's bracelet wristwatch, Ref. 3520/10, circa 1970, the signed and jewelled 175 caliber movement numbered '1165730', the signed gilt dial with baton hour markers, the signed case back interior numbered '3520/10' above '2685891', the integral tapering woven mesh link bracelet with signed foldover clasp, import mark London 1970, total weight 73.2g, case diameter 3.2cm, total length 18.7cm, with case, with Extract from the Archives certificate and service related paperwork.