C1965 18ct cased Patek Philippe 'Top Hat' reference 1450 wrist watch, no. 976897 rectangular case with silvered dial and subsidiary seconds movement. Case made by Markowski with the dial by Stern Freres, Patek movement caliber 9-90. Sotheby's Dec 2005, Patek Philippe produced the reference 1450 from 1940 until approximately 1960