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The Encyclopedia of Horology

Wristwatch · Chronograph

Piaget Onyx Skeletonized Chronograph Reference 15933

Partially verified

The Piaget reference 15933 is a skeletonized chronograph wristwatch featuring a 39mm yellow gold case. The design incorporates a bezel adorned with polished onyx stone inserts and a transparent case back featuring a hobnail (clous de Paris) pattern. The timepiece is driven by a skeletonized movement based on the Lemania 2310 ébauche, which is decorated with hand-engraved floral motifs and mirror-polished anglage on the edges. The skeletonized dial displays two decagonal sub-dials and utilizes black feuille-shaped hands. The watch is described as a custom commission, with source reports suggesting it may be one of only three examples produced and the only known specimen to feature onyx ornamentation. Technical details and historical claims are provided by the auction house description, noting an original retail value of 76,000 Swiss Francs.

Three-quarter view of the Piaget reference 15933 showing the skeletonized dial, onyx-set bezel, and yellow gold case.
Three-quarter view of the Piaget reference 15933 showing the skeletonized dial, onyx-set bezel, and yellow gold case. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Chronograph
Maker / attribution
Piaget
Reference
15933
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
Not established
Source-reported place
سوئیس

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 Design

The reference 15933 is housed in a three-piece yellow gold case measuring 39 millimeters in diameter, characterized by stepped lugs. The aesthetic is defined by the inclusion of polished onyx stones set into the bezel, which distinguishes this specific reference from standard models.

The dial is open-worked to expose the underlying movement components. Time is indicated by black feuille hands, with two decagonal sub-dials positioned to track chronograph measurements.

Evidence for this section
  • “قاب این ساعت با قطر ۳۹ میلی‌متر از طلای زرد ساخته شده و ساختاری سه‌تکه و پیچیده دارد”
  • “از ویژگی‌های بارز قاب می‌توان به زه (بزل) مزین به سنگ انیکس پولیش‌خورده، پایه‌های پلکانی و عریض”
  • “دو شمارنده فرعی ده ضلعی (دکاگونال) ظریف بر روی صفحه قرار دارند”

Movement and Decoration

The watch utilizes a movement derived from the Lemania 2310 ébauche, which has been extensively skeletonized. The visible bridges and plates are embellished with hand-executed floral and arabesque engraving.

The finishing of the movement is completed with mirror-polished anglage on the edges of the components. The manual-wind chronograph mechanism remains visible through both the front skeletonized dial and the transparent exhibition case back, which features a hobnail pattern along its perimeter.

Evidence for this section
  • “بر پایه کالیبر پایه (ébauche) لمانیا ۲۳۱۰ ساخته شده”
  • “سطوح مکانیزم با دست و با نقوش اسلیمی و گل‌دار حکاکی شده”
  • “لبه‌های آن با تکنیک پولیش آینه‌ای آنگلاژ (mirror anglage) پرداخت خورده‌اند”

Provenance and Rarity

According to the provided source, this timepiece was produced as a bespoke commission for an individual client.

The source suggests that only three such examples were manufactured in total, with this specific watch considered the only surviving instance featuring onyx decorative elements.

Evidence for this section
  • “تنها نمونه شناخته‌شده بازمانده با تزیینات سنگ انیکس محسوب می‌شود”
  • “در زمان خود به سفارش اختصاصی یک مشتری ویژه و با قیمت ۷۶,۰۰۰ فرانک سوئیس ساخته شده”
  • “تصور می‌شود که تنها سه نمونه از آن در کل جهان تولید شده باشد”

Open research questions

  • What is the specific internal serial number or movement number associated with this skeletonized caliber?
  • Can the provenance or production records be verified beyond the cited auction literature?

Source evidence

Recorded claims and source quotations for Piaget Onyx Skeletonized Chronograph Reference 15933
FieldSource-reported valueSource quotation
MakerPiaget“پیاژه (Piaget)”
Reference15933“رفرنس 15933”
Case materialYellow gold“طلای زرد”
Base movementLemania 2310“کالیبر پایه (ébauche) لمانیا ۲۳۱۰”
Bezel materialPolished onyx“زه (بزل) مزین به سنگ انیکس پولیش‌خورده”
Case backTransparent with hobnail pattern“قاب پشتی شفاف با الگوی هاب‌نیل (hobnail)”
Movement decorationHand-engraved floral motifs and mirror anglage“سطوح مکانیزم با دست و با نقوش اسلیمی و گل‌دار حکاکی شده و لبه‌های آن با تکنیک پولیش آینه‌ای آنگلاژ (mirror anglage) پرداخت خورده‌اند”

Visible details

  • Case diameter is 39mm
  • Bezel features inset polished black onyx stones
  • Movement bridges exhibit hand-engraved floral patterning
  • Case back exhibits a machined hobnail/clous de Paris texture

Research qualifications

  • Total production count is cited as a possibility rather than a confirmed figure
  • Technical service history is undocumented

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

Consulted source

ساعت مچی کرنوگراف اسکلتون پیاژه Piaget رفرنس 15933 انیکس طلای زرد

Reviewed 2026-11-02 · Record af49fca4d8

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

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