With the Portugieser Perpetual Calendar Tourbillon Edition “150 Years” (Ref. IW504501), IWC combines a perpetual calendar with a tourbillon on the dial for the first time. This spectacular watch has an 18-carat gold case, a white dial with a lacquered finish, and blued hands. It is available in a limited edition of 50 watches. The watch is driven by the newly developed IWC-manufactured 51950 calibre. This is an extension of the basic 51900 calibre, with the addition of a perpetual calendar. Made of 82 individual components and weighing just 0.635 grams, the tourbillon is visible at “12 o’clock” because the watch designers opened up the calendar advance ring and integrated the moon phase in the month display disc at “6 o’clock”. With its solid gold rotor, the automatic winding system generates a power reserve of 7 days.
In the name of the father, son and tourbillon
Wednesday, 16 November 2016
5 min read
Vianney Halter, the watchmaker of future past
Tuesday, 27 September 2016
8 min read