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The Encyclopedia of Horology

Wristwatch · Dress watch

Piaget 18k Dress Watch, Ref. 15970

Partially verified

This Piaget reference 15970 dress watch, reported by Christie's as dating to the late 1990s, features an 18k gold case measuring 33 mm in diameter. The dial exhibits a silvered guilloché center ringed by an outer silvered track with applied Roman numerals, together with a subsidiary seconds register at 6 o'clock. The auction catalog notes that the watch houses a manual-wind caliber 1050P movement and includes an 18k gold Piaget buckle attached to a dark leather strap.

Front view of the Piaget reference 15970 18k gold wristwatch on a dark strap
Front view of the Piaget reference 15970 18k gold wristwatch on a dark strap — Christie's. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
onlineonly.christies.com
Category
Wristwatch · Dress watch
Maker / attribution
Piaget
Reference
15970
Catalogue / lot identifier
57
Source-reported date
circa late 1990s
Country
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 Construction

The case is constructed from 18k gold and measures 33 mm in diameter. It features a stepped circular yellow-gold bezel with curved lugs.

The condition report notes light scratches and small nicks throughout the case, with evidence suggesting it has been lightly polished. The case back is reported to be in good condition with crisp hallmarks and numbers. The interior of the case back features watchmaker's marks.

Evidence for this section
  • “CASE MATERIAL: 18k gold”
  • “CASE DIAMETER: 33mm”
  • “The case has light scratches throughout and some small nicks. The case appears to have been lightly polished.”
  • “The case back is in good condition and the hallmark and numbers to the case back are crisp.”
  • “The inside of the case back has watchmaker's marks.”

Dial and Hands

The watch features a silvered dial with a guilloché center and an outer track. Applied yellow-tone Roman numeral hour markers are paired with a railroad-style minute track.

Time is displayed via polished dauphine hour and minute hands, with a subsidiary seconds register located at 6 o'clock. Patina is noted on the hour, minute, and sub-register hands, and the dial and hands are described as original.

Evidence for this section
  • “DIAL: Silvered guilloche center with silvered outer”
  • “The dial and hands are in good condition and appear to be original.”
  • “The minute and hour hand have developed patina, as well as the hand in the 6 o'clock sub-register.”

Mechanism and Dating

The watch is powered by a manual-wind caliber 1050P movement, dated by the source to the late 1990s.

At the time of cataloging, the movement was noted to be in working order. It has not been tested for accuracy, and a service is recommended due to the age of the watch.

Evidence for this section
  • “CIRCA: late 1990s”
  • “CALIBER: 1050P”
  • “The movement is in working order at the time of cataloging”
  • “The movement has not been tested for accuracy. A service is recommended given the age of the watch.”

Open research questions

  • What specific watchmaker marks are present on the interior of the case back?
  • Can the late 1990s dating be refined via movement serial numbers not currently visible in the provided imagery?

Source evidence

Recorded claims and source quotations for Piaget 18k Dress Watch, Ref. 15970
FieldSource-reported valueSource quotation
Reference15970“REF. 15970”
Case Material18k gold“CASE MATERIAL: 18k gold”
Case Diameter33mm“CASE DIAMETER: 33mm”
MovementManual“MOVEMENT: Manual”
Caliber1050P“CALIBER: 1050P”
Circalate 1990s“CIRCA: late 1990s”
DialSilvered guilloche center with silvered outer“DIAL: Silvered guilloche center with silvered outer”
Accessories18k gold Piaget buckle“ACCESSORIES: 18k gold Piaget buckle”
Buckle ConditionLight scratches and patina“The buckle has light scratches and a light patina.”

Visible details

  • Stepped circular yellow-gold bezel and curved lugs
  • Silvered dial with vertically textured guilloché inner field
  • Applied yellow-tone Roman numeral hour markers with outer railroad-style minute track
  • Small seconds subsidiary register at 6 o'clock marked in ten-second increments
  • Polished dauphine hands for hours and minutes
  • Mounted on a dark blue or black textured leather strap

Research qualifications

  • Movement caliber and interior case back details are not visible in the provided front photograph.
  • The 18k gold buckle is mentioned in auction text but not depicted in the image.

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

Consulted source

PIAGET, 18K DRESS WATCH, REF. 15970, | Christie’s

Reviewed 2026-10-21 · Record 1ade9cbc44

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

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