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Audemars Piguet 18k Automatic Black Diamond 1970s

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Audemars Piguet 18k Automatic Black Diamond 1970s

Black Diamond Elegance — Audemars Piguet in 18k White Gold

This rare Audemars Piguet from the late 1970s is an exercise in quiet opulence. Crafted entirely in 18k white gold, its unique octagonal-elliptical case houses a flawless black dial punctuated by twelve factory-set diamond hour markers — understated luxury at its finest.

The ultra-thin Calibre 2121/1, one of Swiss watchmaking’s most revered automatic movements, lies within a case just 6 mm thick. The integrated white gold bracelet flows effortlessly around the wrist, offering comfort that matches its architectural refinement.

Extremely rare in this configuration — and preserved in outstanding condition — this Audemars Piguet is more than a timepiece: it’s a wearable sculpture of modernist craftsmanship and enduring elegance.

- wrist size in our picture is 18cm circumference -

DIAL:

  • original never touched black dial in flawless condition
  • 12 factory diamonds as hour markers
  • original hands & crown
  • tiny scratch on crystal next to the center

BRACELET & CLASP:

  • 18k white gold AP bracelet is fitting up to a 19.5 cm and is slightly adjustable at the clasp (around 0.5 cm) / 2 mm thick
  • 18k white gold AP clasp 

CASE:

  • excellent overall condition, showing almost no traces of use
  • 3- body 18k white gold case with snap-on case back from casemaker Adea Fontan Sàrl
  • 31.5 mm (without crown) / 31.5 mm (lug-to-lug) / 20 mm (between lugs) / 6 mm thick
  • year: 1977-1979
  • total weight: 95 g

MOVEMENT:

  • Audemars Piguet Cal. K 2121/1 - automatic
  • 36 jewels, 21600 A/h, 40 hours power reserve
  • professionally serviced 08/2025
  • +11 sec/d / 310°

BOX & PAPERS:

  • GOLDAMMER certificate of authenticity & service documentation card
  • GOLDAMMER box

GOLDAMMER REFERENCE: #1065

$5,998.74

Original: $17,139.26

-65%
Audemars Piguet 18k Automatic Black Diamond 1970s

$17,139.26

$5,998.74

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Description

Black Diamond Elegance — Audemars Piguet in 18k White Gold

This rare Audemars Piguet from the late 1970s is an exercise in quiet opulence. Crafted entirely in 18k white gold, its unique octagonal-elliptical case houses a flawless black dial punctuated by twelve factory-set diamond hour markers — understated luxury at its finest.

The ultra-thin Calibre 2121/1, one of Swiss watchmaking’s most revered automatic movements, lies within a case just 6 mm thick. The integrated white gold bracelet flows effortlessly around the wrist, offering comfort that matches its architectural refinement.

Extremely rare in this configuration — and preserved in outstanding condition — this Audemars Piguet is more than a timepiece: it’s a wearable sculpture of modernist craftsmanship and enduring elegance.

- wrist size in our picture is 18cm circumference -

DIAL:

  • original never touched black dial in flawless condition
  • 12 factory diamonds as hour markers
  • original hands & crown
  • tiny scratch on crystal next to the center

BRACELET & CLASP:

  • 18k white gold AP bracelet is fitting up to a 19.5 cm and is slightly adjustable at the clasp (around 0.5 cm) / 2 mm thick
  • 18k white gold AP clasp 

CASE:

  • excellent overall condition, showing almost no traces of use
  • 3- body 18k white gold case with snap-on case back from casemaker Adea Fontan Sàrl
  • 31.5 mm (without crown) / 31.5 mm (lug-to-lug) / 20 mm (between lugs) / 6 mm thick
  • year: 1977-1979
  • total weight: 95 g

MOVEMENT:

  • Audemars Piguet Cal. K 2121/1 - automatic
  • 36 jewels, 21600 A/h, 40 hours power reserve
  • professionally serviced 08/2025
  • +11 sec/d / 310°

BOX & PAPERS:

  • GOLDAMMER certificate of authenticity & service documentation card
  • GOLDAMMER box

GOLDAMMER REFERENCE: #1065

Audemars Piguet 18k Automatic Black Diamond 1970s | GOLDAMMER