A Patek Philippe ultra-thin gent's wristwatch, c.1960s, 3.1 cm diameter, 18ct. white gold case; 18 jewel, caliber 175 mechanical movement with serial no.1134704, the case back engraved 18K and with manufacturer's name and serial no.320166 3512, the silvered dial with black Roman numerals and slender black hands. Black 'lizard' strap with 18K white gold buckle.