Patek Philippe & Co., Geneve: A late 1940's steel chronograph wristwatch, the silvered dial with outer tachymetric scale, raised baton numerals, Roman numerals for twelve and six, subsidiary dials for running seconds and elapsed minutes, sweep centre seconds operated by two square buttons in the band, the snap-on back with makers mark and No.508301 11, the signed movement with micrometer regulation jewelled to the centre with 23 jewels, adjusted to eight positions and No.863109, with makers leather strap and steel buckle, original presentation box, certificate of origin and spare steel bracelet