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The Encyclopedia of Horology

Wristwatch · Ultra-thin wristwatch

Piaget Altiplano Ultra Thin, Ref. 902

Partially verified

This Piaget wristwatch, identified as reference 902, was produced in 1970. The timepiece features an 18-karat yellow gold circular case measuring 31 mm in diameter. The dial is crafted from tiger's eye stone, featuring Roman numeral hour markers and dauphine-style hands made of 18-karat yellow gold. The watch is powered by a hand-wound mechanical movement, identified by the source as the Piaget caliber 9P2. It is fitted with a black leather strap. The object is presented as an example of the manufacturer's utilization of ornamental stone dials during the late 1960s and early 1970s. The provided documentation states that the watch is offered without accompanying accessories, boxes, or original papers. The current condition of the movement and the record of any prior service or restoration remain unstated by the vendor.

Frontal view of the Piaget Altiplano Ultra Thin, Ref. 902, featuring an 18k yellow gold case and a tiger's eye stone dial.
Frontal view of the Piaget Altiplano Ultra Thin, Ref. 902, featuring an 18k yellow gold case and a tiger's eye stone dial. — Somlo Antiques via Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Ultra-thin wristwatch
Maker / attribution
Piaget
Reference
902
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
1970
Source-reported place
Switzerland

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial

The watch features a round case constructed from 18-karat yellow gold with a diameter of 31 mm. The case houses a dial manufactured from a single piece of polished tiger's eye, a chatoyant gemstone known for its natural parallel bands of golden-brown color.

The dial is set with Roman numeral markers and features dauphine-style hands, both finished in 18-karat yellow gold to maintain continuity with the case material.

Evidence for this section
  • “ساختاری از جنس طلای زرد ۱۸ عیار دارد”
  • “صفحه منحصر‌به‌فرد آن از جنس سنگ چشم ببر (Tigers eye stone) است”
  • “اعداد رومی حک‌شده و عقربه‌های سبک دوفین (Dauphine) از جنس طلای زرد ۱۸ عیار”

Movement

The watch is equipped with the Piaget caliber 9P2, a hand-wound mechanical movement.

The movement operates via manual winding, requiring the user to interact directly with the crown to store energy in the mainspring. No specific information regarding the present mechanical status, accuracy, or maintenance record of this caliber is provided in the source documentation.

Evidence for this section
  • “موتور کوکی کالیبر 9P2 پیاژه”
  • “عضوی از خانواده کالیبرهای فوق‌باریک تاریخی این خانه ساعت‌سازی به شمار می‌رود”
  • “عرضه کالیبر نامدار 9P در سال ۱۹۵۷ با ضخامت تنها ۲ میلی‌متر”

Provenance and Condition

The watch is attributed to the year 1970 and is described as an example of the manufacturer's historical production. The source indicates that the item is being offered for sale without any associated boxes, documents, or additional accessories. The vendor has not provided details regarding past maintenance, servicing, or any potential restoration work performed on the components.

The provided information is based on documentation from the auction source, and the accuracy of these details has not been independently verified.

Evidence for this section
  • “ساخته‌شده در سال ۱۹۷۰ میلادی”
  • “ساعت بدون لوازم جانبی یا جعبه و مدارک همراه (N/A) ارائه می‌شود”
  • “وضعیت فنی، سابقه سرویس یا هرگونه عملیات بازسازی در گزارش فروشنده ذکر نشده است”

Open research questions

  • What is the specific movement serial number to verify the production period of the 9P2 caliber?
  • Does the case hallmarking confirm the assay date consistent with 1970?

Source evidence

Recorded claims and source quotations for Piaget Altiplano Ultra Thin, Ref. 902
FieldSource-reported valueSource quotation
MakerPiaget“برند سوئیسی پیاژه (Piaget)”
Reference902“شماره رفرنس 902”
Date1970“ساخته‌شده در سال ۱۹۷۰”
Case Material18ct Yellow Gold“طلای زرد ۱۸ عیار”
Dial MaterialTiger's eye“سنگ چشم ببر (Tigers eye stone)”
MovementCaliber 9P2“موتور کوکی کالیبر 9P2 پیاژه”
Case Diameter31mm“ابعاد ۳۱ میلی‌متر”
CountrySwitzerland“برند سوئیسی”

Visible details

  • Dial made of natural tiger's eye stone
  • 18-karat yellow gold case with a 31 mm diameter
  • Hand-wound mechanical movement, caliber 9P2
  • Black leather strap attached to the lugs

Research qualifications

  • Current mechanical functionality and service history are not reported
  • Authenticity of all components has not been independently verified beyond the provided source

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

ساعت مچی Piaget اولترا تین طلا ۱۸ عیار رفرنس 902 ساخت ۱۹۷۰

Reviewed 2026-11-02 · Record 108948dbf6

Terms in this record

Glossary explanations for terms named in this object’s record.