Patek Philippe World Time ref 5130R Guilloché Dial in 18k Rose Gold with Box and PapersThe story of the Patek Philippe World Time complication begins with Louis Cottier, a Geneva watchmaker who invented the modern world time mechanism in the early 1930s. His system allowed the wearer to read the time in 24 time zones simultaneously, using a central hour and minute hand, a rotating 24 hour ring, and a city ring representing major world cities. Patek Philippe quickly recognized the brilliance of Cottiers invention and, in 1937, introduced