18ct yellow gold, reference 605HU 'World Time' pocket watch. Made 1946
18ct yellow gold, reference 605HU 'World Time' pocket watch. Made 1946
18ct yellow gold, reference 605HU 'World Time' pocket watch. Made 1946
18ct yellow gold, reference 605HU 'World Time' pocket watch. Made 1946
  • Load image into Gallery viewer, 18ct yellow gold, reference 605HU 'World Time' pocket watch. Made 1946
  • Load image into Gallery viewer, 18ct yellow gold, reference 605HU 'World Time' pocket watch. Made 1946
  • Load image into Gallery viewer, 18ct yellow gold, reference 605HU 'World Time' pocket watch. Made 1946
  • Load image into Gallery viewer, 18ct yellow gold, reference 605HU 'World Time' pocket watch. Made 1946

18ct yellow gold, reference 605HU 'World Time' pocket watch. Made 1946

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Patek Philippe
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  • Brand: Patek Philippe
  • Made: 1946
  • Model: Pocket watch
  • Reference: 605HU
  • Calibre: 17-170
  • Movement: Manual
  • Material: 18ct yellow gold
  • Features/complications: Open face and World Time indicator
  • Dial: Silvered dial with outer World Time bezel featuring 41 cities with inner 24-hour day/night featuring applied 18ct yellow gold mirror polished bullet hour indices and Roman numeral quarters with yellow gold ring-shaped hour hand and dauphine minute hand
  • Case dimensions: 44.5 mm
  • Bracelet/strap: N/A
  • Accessories: Extract from the Archives
  • Web reference: 2070

Essay: Geneva watchmaker Louis Cottier (1894-1966) invented a functional complication that would allow the wearer to instantaneously know the time in 42 different cities. Designed to be simple to operate, the local or mean time is set through the crown (the 24 hour ring will revolve in the opposite direction to the hands). Subsequently, the outer ring is adjusted by depressing the button in the case until one's current location is indicated at the 12 o'clock position. Once calibrated, the relative time of each world location is set. The two-tone, 24-hour ring indicates world locations that are in night time by the grey section and daytime by the silvered section.

In 1937 Patek Philippe released the reference 605HU (Heures Universelles) that remained in production for more than 10 years. Between 1930 and 1964, Cottier delivered to Patek Philippe 95 modified 17-170 movements (considered one of the best time only movements of its time), most of them employed in the reference 605