18ct white gold, reference 3445 wristwatch. Made 1971
18ct white gold, reference 3445 wristwatch. Made 1971
18ct white gold, reference 3445 wristwatch. Made 1971
18ct white gold, reference 3445 wristwatch. Made 1971
18ct white gold, reference 3445 wristwatch. Made 1971
18ct white gold, reference 3445 wristwatch. Made 1971
  • Load image into Gallery viewer, 18ct white gold, reference 3445 wristwatch. Made 1971
  • Load image into Gallery viewer, 18ct white gold, reference 3445 wristwatch. Made 1971
  • Load image into Gallery viewer, 18ct white gold, reference 3445 wristwatch. Made 1971
  • Load image into Gallery viewer, 18ct white gold, reference 3445 wristwatch. Made 1971
  • Load image into Gallery viewer, 18ct white gold, reference 3445 wristwatch. Made 1971
  • Load image into Gallery viewer, 18ct white gold, reference 3445 wristwatch. Made 1971

18ct white gold, reference 3445 wristwatch. Made 1971

Patek Philippe
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  • Brand: Patek Philippe
  • Made: 1971
  • Model: Calatrava
  • Reference: 3445
  • Calibre27-460 M 
  • Movement: Automatic
  • Material: 18ct white gold
  • Features/complications: With date
  • Dial: Brushed blue dial with outer minute track featuring applied white gold polished baton hour indices and white gold baton hands with subsidiary seconds at 6 o’clock and date window at 3 o’clock 
  • Case Dimensions: 35mm
  • Bracelet/Strap: Integrated 18ct white gold bracelet | Length 170mm
  • Accessories: Extract from the Archives
  • Web reference: 2441

Essay: Produced between the years of 1961 and 1981, the reference 3445 was Patek Philippe’s first automatic wristwatch with a date function made in series, also featuring a water resistant style screw down case back. The calibre 27-460M (“M” for Monodate) was an evolution of Patek Philippe’s first automatic calibre, the 12-600AT, which was fitted to the legendary reference 2526.

The calibre 27-460M had received several upgrades, including a Gyromax balance wheel, a ball bearing, and some additional jewels. Over the ensuing years, three series were made with the first fitted with an acrylic crystal, similar to the present watch, the 2nd series made during the late 1970s featuring a higher bezel to accommodate a sapphire crystal, and the 3rd series featuring a sapphire display back. The model was also made with integrated bracelets, and offered with dials in silver, champagne, blue, and later with grey dial with white Roman numerals