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Piaget

Altiplano 60th Anniversary Hand-Wind 40mmLimited / 460 pieces

Ref. G0A42105
2017–2022 · 40mm · caliber Piaget Cal. 430P: in-house manual-wind, 18,000bph, 43h PR, 18j; used in Altiplano 60th; only 3.65mm thick; launched to celebrate 60 years of ultra-thin expertise in 2017
Limited · 460 pieces#3 in family

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Movement tier: unclassified · caliber Piaget Cal. 430P: in-house manual-wind, 18,000bph, 43h PR, 18j; used in Altiplano 60th; only 3.65mm thick; launched to celebrate 60 years of ultra-thin expertise in 2017 · 43h power reserve · see-through caseback
Medium-large: suits wrists 6.5 in+ (16.5 cm+)
40 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.

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Authentication

Limited to 460 pieces; all accompanying documentation must be present and the caliber in the papers must match the Cal. 430P visible through the caseback.

Known issues in the market
  • Limited editions require complete paperwork verification; the 460-piece production run means authentic examples have all original documentation, and papers are a significant part of the collectible value.
  • Cal. 430P is an older Piaget caliber with historical significance; verify through the caseback that this specific caliber is present and not a later substitute.
AreaWhat to checkWhat is correctRed flag
casebackCal. 430P identification and papers matchExhibition caseback showing Cal. 430P; caliber text matches accompanying papers; serial number consistent with 460-piece production runCaliber number that does not match papers; serial number outside the 460-piece range; solid caseback on exhibition-spec model
dial60th anniversary dial text and sunray finishSilver sunray dial with specific anniversary text; text positioning and font consistent with Piaget press materialsMissing anniversary text; incorrect dial finish; dial text that does not match Piaget 60th anniversary specification
movementCal. 430P winding and rateSmooth manual winding throughout; movement runs at correct rate at 18,000bph (slower beat than modern movements)Rough winding; incorrect beat rate; movement running significantly fast or slow indicating service need
Common legitimate replacements
  • Papers are a critical component of the 460-piece anniversary edition's value; incomplete documentation reduces both monetary and collectible value significantly.
  • Leather straps are frequently replaced; factory Piaget anniversary straps have specific stitching and a signed buckle matching the anniversary edition.
Expert resources: Piaget Altiplano 60th Anniversary documentation at piaget.com. TimeZone Piaget subforum for anniversary edition serial number and documentation references.

Authentication guide

Last reviewed June 2026

The Altiplano 60th Anniversary commemorates 60 years of ultra-thin expertise (2017) using caliber 430P, a manual-wind movement at 3.65mm thickness in a total case height of 5.25mm. Production ran 2017-2022 -- this is a limited-production piece, not an ongoing production reference.

Known reproduction risks

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HIGH RISK

Automatic movement substituted for manual-wind 430P

  • Rotor visible through display caseback
  • Watch winds automatically from wrist motion
  • Beat rate appears to be faster than the deliberate 2.5Hz of the 430P
MEDIUM

Undecorated movement bridges

  • Plain or brushed bridge surfaces through caseback
  • No anglage on bridge edges
  • Movement appears generically finished
LOW

Post-production serial numbers

  • Serial number date encoding suggesting production after 2022
  • Watch presented as "new old stock" without supporting documentation
  • Box and papers date inconsistent with claimed acquisition history

Production of the Altiplano 60th Anniversary ended in 2022. Legitimate old stock examples exist, but verify documentation carefully for any example represented as new.

Dial variants by era

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EraDescriptionIdentifiers
2017 to 2022Blue or silver dial with applied index markers. The blue dial ("Bleu Nuit") is the signature variant for the anniversary edition. Manual-wind only. "PIAGET" at 12. No date complication. The 40mm steel case maintains the classic Altiplano proportions. The total case height of 5.25mm is visually and physically similar to the 1200P-equipped versions.
  • Deep blue or silver dial -- blue is the anniversary signature color
  • No date window
  • Manual-wind crown (no rotor)
  • Applied index markers
  • "PIAGET" at 12
  • 40mm steel case at 5.25mm total height
  • "60th Anniversary" text or equivalent commemorative text on dial or caseback (variant-dependent)

Service part flags

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Manual wind verification

Original: Caliber 430P is manual-wind. No automatic rotor. Crown winds the mainspring directly. The movement is visible through the display caseback with no rotor obscuring the bridges. This distinguishes the 60th Anniversary from the automatic 1200P-equipped Altiplano references.

Replacement tells
  • Automatic rotor visible through display caseback -- caliber 430P is manual only
  • Watch winds from wrist motion
  • Caseback shows caliber number other than 430P
Movement through caseback

Original: Caliber 430P: 3.65mm thick, visible through the display caseback. The bridges show Cotes de Geneve and anglage. The mainspring barrel is visible. No rotor. The gear train and escapement are visible in their entirety. The 18,000bph (2.5Hz) beat rate is lower than most modern watches -- the seconds hand movement will appear slightly more deliberate.

Replacement tells
  • Movement shows a rotor
  • Bridge decoration absent
  • Beat rate appears to be 28,800bph or higher (more rapid seconds hand sweep)
  • Caseback caliber number is 1200P rather than 430P (automatic versus manual)

Case back markings

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2017 to 2022
  • Caliber 430P designation
  • "PIAGET" with logo
  • Water resistance: 20m
  • Reference G0A42105 with serial number
  • "STAINLESS STEEL"
  • "SWISS MADE"
  • "60th Anniversary" or commemorative text on some examples

Movement tells

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  • Caliber 430P beats at 18,000bph (2.5Hz). The seconds hand moves in 5 discrete steps per second, visibly distinct from the smooth appearance of a 28,800bph movement. This is a low beat rate for a contemporary movement -- it is a design choice for the ultra-thin architecture, not an engineering limitation.
  • Power reserve is 43 hours from full manual wind. A watch stopping in under 24 hours has a worn or incorrect mainspring.
  • Production ended in 2022. The reference is no longer in production. Any watch represented as a new Altiplano 60th Anniversary with a very recent serial number is suspect -- check against Piaget serial number databases.
Sources: Piaget official; A Blog to Watch -- Piaget Altiplano 60th.

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