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The Encyclopedia of Horology

Wristwatch · Annual calendar moonphase wristwatch

Patek Philippe Annual Calendar Moonphase Reference 5146J

Partially verified

The Patek Philippe Reference 5146J is a self-winding annual calendar wristwatch featuring a moonphase complication. The watch is constructed with a 39mm 18K yellow gold case, which includes a polished bezel, a signed crown, and a sapphire crystal. The white luminous dial displays applied hour markers, with subsidiary registers for the day and month, a date window at the 6 o'clock position, and a moonphase aperture. The hands are a luminous 'feuille' style. Internally, the watch is powered by the Calibre 315 S IRM QA LU self-winding movement. It is paired with a black alligator leather strap that attaches via a signed 18K yellow gold deployant buckle. The object is accompanied by a Certificate of Origin dated 2006, confirming its production era within the annual calendar line, a complication originally developed by Patek Philippe in partnership with the Geneva School of Engineering.

Front view of the Patek Philippe 5146J.
Front view of the Patek Philippe 5146J. — Analog:Shift. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
analogshift.com
Category
Wristwatch · Annual calendar moonphase wristwatch
Maker / attribution
Patek Philippe
Reference
5146J
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
2006
Source-reported place
Not established

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 Patek Philippe Reference 5146J is housed in a 39mm 18K yellow gold case. The design incorporates a smooth, polished bezel and a sapphire crystal. The crown, situated on the side of the case, is signed. Integrated into the case band are push-button adjusters for the calendar functions.

The dial is finished in white and features luminous applied indices and numerals. A 'feuille' handset, also luminous, indicates the time. Calendar information is presented through recessed subsidiary registers for the day and month, with a date window positioned at 6 o'clock. A moonphase aperture is also located in this lower section of the dial.

Evidence for this section
  • “39mm 18K yellow gold case with a sapphire crystal, signed crown, and a smooth, polished bezel.”
  • “features a luminous, white dial with applied indices, recessed subsidiary registers indicating day and month, a moonphase aperture and date window at 6 o'clock, and a matching luminous 'feuille' handset.”

Movement and Functionality

This timepiece operates using Patek Philippe's Calibre 315 S IRM QA LU self-winding movement. This movement provides the annual calendar functionality, a complication that automatically accounts for the varying lengths of months, requiring manual adjustment only once per year at the end of February.

The watch includes a moonphase display and a date window. The movement architecture relates to the broader development of annual calendar complications at Patek Philippe, which began following an initiative with the Geneva School of Engineering in 1991 to simplify the perpetual calendar mechanism.

Evidence for this section
  • “Powered by Patek Philippe's Calibre 315 S IRM QA LU self-winding movement”
  • “to simplify the perpetual calendar.”
  • “their work led to the inception of the annual calendar complication, patented by Patek Philippe in collaboration with the bright engineering minds at the GSE.”

Accessories and Documentation

The watch is accompanied by a black alligator leather strap. This strap is fitted with a signed 18K yellow gold deployant buckle, matching the material of the watch case.

Documentation included with the watch consists of a Certificate of Origin. The source specifies that this document is dated 2006, establishing the temporal context for this specific unit.

Evidence for this section
  • “comes complete with a signed black alligator leather strap, signed 18K yellow gold deployant buckle and Certificate of Origin dated 2006.”

Open research questions

  • What is the individual movement serial number for this watch?
  • Which specific month-adjustment pusher functions correspond to the push-buttons on the case band?

Source evidence

Recorded claims and source quotations for Patek Philippe Annual Calendar Moonphase Reference 5146J
FieldSource-reported valueSource quotation
Reference5146J“Reference 5146J”
Material18K yellow gold“18K yellow gold case”
MovementCalibre 315 S IRM QA LU“Calibre 315 S IRM QA LU self-winding movement”
StrapBlack alligator leather“signed black alligator leather strap”
Buckle18K yellow gold deployant buckle“signed 18K yellow gold deployant buckle”
Included documentationCertificate of Origin“Certificate of Origin dated 2006”

Visible details

  • Applied gold indices and numerals on a white dial
  • Moonphase aperture located at the 6 o'clock position
  • Push-button adjusters visible on the case band
  • Signed crown featuring the Patek Philippe Calatrava cross

Research qualifications

  • The exact serial number is not provided in the source text
  • The specific provenance history of this individual unit is not documented beyond the 2006 certificate

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

Consulted source

ساعت Patek Philippe Annual Calendar Moonphase مدل 5146J

Reviewed 2026-11-02 · Record dd32367dbf

Terms in this record

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