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The Encyclopedia of Horology

Wristwatch · Annual calendar wristwatch

Patek Philippe Annual Calendar Moonphase Reference 5146G-001

Partially verified

The Patek Philippe Reference 5146G-001 is an annual calendar wristwatch featuring a moonphase complication. The watch is housed in a 39mm 18k white gold case with a smooth polished bezel and sapphire crystal. The dial is described as ivory white with applied indices, featuring two recessed subsidiary registers for day and month indications, as well as a moonphase aperture and a date window positioned at 6 o'clock. The watch includes a luminous 'feuille' handset. Power is provided by the Calibre 324 S IRM QA LU self-winding movement. The watch is fitted with a signed black alligator leather strap that attaches to a signed 18k white gold deployant buckle. The crown is also signed.

Front view of the Patek Philippe Annual Calendar Moonphase 5146G-001 showing the ivory white dial, subsidiary registers, and black alligator strap.
Front view of the Patek Philippe Annual Calendar Moonphase 5146G-001 showing the ivory white dial, subsidiary registers, and black alligator strap. — Analog:Shift. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
shop.analogshift.com
Category
Wristwatch · Annual calendar wristwatch
Maker / attribution
Patek Philippe
Reference
5146G-001
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
Not established
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 5146G-001 is constructed with a 39mm case manufactured from 18k white gold. It features a smooth, polished bezel and is topped by a sapphire crystal. The winding crown on the side of the case bears a signature.

The dial is finished in an ivory white color. It incorporates applied indices to mark the hours and features a set of luminous 'feuille' style hands. The layout includes two recessed subsidiary registers that track the day and month, a moonphase aperture, and a date display window situated at the 6 o'clock position.

Evidence for this section
  • “housed in a beautifully proportioned 39mm 18k white gold case with a sapphire crystal, signed crown, and a smooth polished bezel”
  • “features a charming ivory 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

The watch functions as an annual calendar, a complication that tracks the date and month while requiring manual adjustment only once per year. This system was originally developed through a collaboration with the Geneva School of Engineering and subsequently patented by the brand.

The timekeeping and calendar functions are driven by the Patek Philippe Calibre 324 S IRM QA LU self-winding movement. This automatic mechanism manages the various displays, including the lunar phase and the calendar registers.

Evidence for this section
  • “annual calendar complication, patented by Patek Philippe in collaboration with the bright engineering minds at the GSE”
  • “Powered by Patek Philippe's Calibre 324 S IRM QA LU self-winding movement”

Strap and Hardware

The watch is presented on a strap crafted from black alligator leather. The strap is marked with the brand's signature.

Securing the watch to the wrist is an 18k white gold deployant buckle. Like the crown, this component is signed by the manufacturer.

Evidence for this section
  • “comes fitted to its signed black alligator leather strap with a signed 18k white gold deployant buckle”

Open research questions

  • What is the specific production year for this serial number range?
  • Does the Calibre 324 S IRM QA LU movement include a power reserve indicator on this specific dial configuration?

Source evidence

Recorded claims and source quotations for Patek Philippe Annual Calendar Moonphase Reference 5146G-001
FieldSource-reported valueSource quotation
MakerPatek Philippe“Patek Philippe”
Reference5146G-001“Reference 5146G-001”
Case Material18k white gold“18k white gold case”
Case Diameter39mm“39mm 18k white gold case”
MovementCalibre 324 S IRM QA LU“Patek Philippe's Calibre 324 S IRM QA LU self-winding movement”
Dial ColorIvory white“ivory white dial”
StrapBlack alligator leather“signed black alligator leather strap”
Clasp18k white gold deployant buckle“signed 18k white gold deployant buckle”

Visible details

  • Applied Arabic numerals at 3, 9, and 12 o'clock positions
  • Signed crown with the Calatrava cross symbol
  • Date window located at the 6 o'clock position
  • Subsidiary registers for day and month displays

Research qualifications

  • The exact year of manufacture is not provided in the source text
  • The source does not specify the length or water-resistance rating of the watch

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

Consulted source

ساعت مچی پتک فیلیپ تقویم سالانه و فاز ماه، رفرنس 5146G-001

Reviewed 2026-11-02 · Record 1362b8fd00

Terms in this record

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

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