This lot is offered without reserve.
Lots 219 – 224 are fine example of Patek Philippe’s World Time wristwatches, among the most distinguished creations of the revered firm. Invented in 1930 by the celebrated Louis Cottier and offered to Patek Philippe, the ingenious concentric rings mechanism allows for immediate knowledge of the time in every time zone of the world at a glance. Cottier's ingenuity resulted in the company's now revered classic references 1415 HU and 2523. In 1959, Patek Philippe obtained a patent for Cottier's device (Swiss Patent No. 340 191). The company further developed the movement, introducing calibre 240 HU in 1999.