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The Encyclopedia of Horology

Pocket watch · Skeletonised pocket watch

Audemars Piguet Ref. 5656 Skeletonised Pocket Watch

Partially verified

This Audemars Piguet reference 5656 is an 18K white gold manual-winding skeletonised pocket watch dating to circa the 1970s. Measuring approximately 47 mm in diameter, the timepiece features an openworked movement designated as Calibre 5107, numbered 154040. The outer bezel is engraved with black Roman numerals framing an inner diamond-set ring, while the pointed suspension bow is also embellished with diamonds. Accompanied by an Audemars Piguet fitted box, the watch exhibits skeletonised, hand-engraved gilt bridges and blue-steel hands, weighing approximately 52.8 grams.

Dial and movement front view showing skeletonised Calibre 5107, diamond-set inner bezel, and Roman numeral bezel
Dial and movement front view showing skeletonised Calibre 5107, diamond-set inner bezel, and Roman numeral bezel — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Pocket watch · Skeletonised pocket watch
Maker / attribution
Audemars Piguet
Reference
5656
Catalogue / lot identifier
208
Source-reported date
circa 1970s
Country
Switzerland
Source-reported serial
93777

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 Design and Gem-Setting

The pocket watch is described as an 18K white gold and diamond openworked piece measuring approximately 47 mm in diameter, with a total weight of approximately 52.8 grams. Visual inspection shows the front bezel engraved with black Roman numerals enclosing an inner diamond-set circular border.

A pointed triangular suspension bow surmounts the case and is set with round diamonds. The cataloguer notes signatures across the dial, case, and movement.

Evidence for this section
  • “18K white gold and diamond manual-winding skeletonized pocket watch.”
  • “Diameter Ø47 mm.”
  • “Weight 52.8 gr. (approx.)”
  • “Front bezel is engraved with black Roman numerals enclosing a diamond-set inner border.”
  • “The pointed triangular bow is pavé-set with round diamonds.”
  • “Signature dial, case and movement”

Skeletonised Movement and Dial Display

The manual-winding movement is identified as Calibre 5107 and is numbered 154040. It features an engraved gilt skeletonised framework that leaves the mainspring and gear train visible.

Time is indicated by blued hands that sweep above the exposed mechanism and align with the outer bezel's Roman numerals. The auction grading table lists the hands as 'Original'.

Evidence for this section
  • “Caliber 5107”
  • “Movement No. 154040”
  • “Engraved gilt skeletonised movement framework with exposed mainspring and gear train, paired with blued hands.”
  • “HANDS Original”

Reported Condition and Accessories

The timepiece is dated in catalog records to circa the 1970s and is accompanied by an Audemars Piguet fitted box.

Seller grading notes report the case as 'Slightly scratched' under grade 2-8. The movement is marked 2* 'Very good' alongside a cataloguer notice that an overhaul is recommended at the buyer's expense.

Evidence for this section
  • “Year circa 1970s”
  • “Accessories AP fitted box”
  • “Case: 2-8 Very good Slightly scratched”
  • “Movement: 2* Very good Overhaul recommended, at buyer's expense”

Open research questions

  • What base movement calibre was modified to create the skeletonised Calibre 5107?
  • Does Audemars Piguet archival documentation provide a confirmed delivery date for movement number 154040 and case number 93777?
  • What is the recorded total diamond count and gem weight for the bow and inner bezel ring?

Source evidence

Recorded claims and source quotations for Audemars Piguet Ref. 5656 Skeletonised Pocket Watch
FieldSource-reported valueSource quotation
Reference5656“Reference 5656”
Case Number93777“Case No. 93777”
Movement Number154040“Movement No. 154040”
Caliber5107“Caliber 5107”
DiameterØ47 mm.“Diameter Ø47 mm.”
Weight52.8 gr. (approx.)“Weight 52.8 gr. (approx.)”
Case Material18K white gold and diamond“18K white gold and diamond manual-winding skeletonized pocket watch.”
HandsOriginal“HANDS Original”
SignaturesDial, case and movement“Signature dial, case and movement”

Visible details

  • Front bezel is engraved with black Roman numerals enclosing a diamond-set inner border.
  • The pointed triangular bow is pavé-set with round diamonds.
  • Engraved gilt skeletonised movement framework with exposed mainspring and gear train, paired with blued hands.

Research qualifications

  • The auction house recommends an overhaul at the buyer's expense.
  • The case shows slight scratching as reported in the grading report.

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

Consulted source

AUDEMARS PIGUET, REF. 5656, SKELETONISED POCKET WATCH, 18K WHITE GOLD AND DIAMOND | Important Modern & Vintage Timepieces | Hong Kong May 31, 2026

Reviewed 2026-10-21 · Record b7ae6534cd

Terms in this record

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