Patek Philippe World Time Replica Watches: Patek Philippe World Timer is indissolubly linked to Louis Cottier. The son of a watchmaker, Cottier earned horological fame for developing mechanisms indicating the time for our 24 time zones on a single dial. From the 1930s onward, Cottier manufactured such watches for prestigious clients among which Patek Philippe, Vacheron Constantin, Rolex or Agassiz. In 1950, he created the first World Timer with 2 crowns, allowing to change the reference city when travelling. This practical innovation was presented to Patek Philippe, inspiring the cult 2523 series, manufactured from 1953.