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Altiplano

Introduced: 1957

Purpose / Inspiration:
Piaget’s Altiplano was born out of a quest to push the boundaries of thinness. In the mid-1950s, ultra-slim movements were all the rage in Geneva, and Piaget—already an expert in crafting slender calibers—decided to build an entire watch around its wafer-thin 9P movement. The goal wasn’t sportiness or complications; it was purity of line and the elegance that comes from doing less, better. The Altiplano showed the world that a dress watch could be as technically impressive as it was beautiful.

Designer:
An in-house Piaget team led by Gérald Piaget (founder’s son) and watchmaking maestro Yves G. Piaget oversaw the project. Their mantra: “If you build thinner, you build stronger.” The 9P movement measured just 2 mm high—an engineering feat that set the stage for decades of record-breaking slenderness.

Case size:

  • Classic: 38 mm (the modern icon)
  • Other sizes:
    • 34 mm (ladies’ version)
    • 40 mm (contemporary large edition)
    • 43 mm (limited editions and special series)
  • Extremely slender profile—cases often under 6 mm thick
  • Simple, domed sapphire crystal

Case options:

  • 18 k yellow gold (original core)
  • 18 k rose gold
  • 18 k white gold
  • Platinum (limited runs)
  • Gem-set bezels (diamonds, baguettes on special editions)
  • Brushed sides, polished bezel
  • Snap-on or screw-down casebacks—some open to display movement

Powered by:

  • Ultra-thin manual-wind in-house movements:
    • Caliber 9P (2 mm thick) – the original from 1957
    • Caliber 12P (2.3 mm thick) – added date function in 1960
    • Caliber 430P (2.1 mm thick) – modern reinterpretation
    • Caliber 1208P (2.35 mm thick) – micro-rotor, 44 h power reserve
    • Caliber 501P (2.1 mm thick) – date and micro-rotor
  • Power reserve: ~43–44 hours (varies by caliber)
  • Finishing: Côtes de Genève, bevelled edges, circular graining

Bezel:

  • Ultra-thin polished ring
  • Fixed, mirror-finish—visually minimal to accentuate thinness
  • On gem-set models, a single row of brilliant stones

Dial options:

  • Sun-burst silver (most classic)
  • Opaline white
  • Slate gray
  • Midnight blue lacquer
  • Guilloché editions on high-jewelry pieces
  • Applied slim baton indices (gold, matching case)
  • Leaf-shape hands or dauphine hands in matching metal
  • Small seconds at 6 o’clock on some models

Water resistance:

  • 30 m (splash-proof; not for swimming)
  • Thin snap-on crown—gentle on wrists, but limited sealing

Bracelet / Strap:

  • Alligator leather strap (black, brown, blue)
  • Pin-buckle or matching gold pin buckle
  • Integrated ultra-thin lugs for seamless profile
  • Occasionally offered on sleek metal Milanese mesh

Production status:
Still in production and at the heart of Piaget’s core collection. Launched as a pure dress watch, it has expanded into complications (moonphase, date) and high-jewelry variants—yet always remains the benchmark for elegant slimness.

Why it matters:
The Altiplano isn’t just slim—it’s a statement in restraint. By mastering ultra-thin movements, Piaget proved that less can indeed be more. Each Altiplano is a delicate balance of engineering prowess and refined design, worn by connoisseurs who appreciate subtlety over flash. It’s the watch you notice only when you notice how perfectly it sits under your cuff.

Thin. Elegant. Timeless.
The Ultimate Expression of “Less Is More.”
If You Value Understated Mastery, This Is Your Watch.