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The Encyclopedia of Horology

Wristwatch · Annual Calendar

Patek Philippe Gondolo Calendario Ref. 5135R-001

Partially verified

This Patek Philippe Gondolo Calendario (Ref. 5135R-001) is a tonneau-shaped, 18K pink gold wristwatch featuring an annual calendar with moon phases and a 24-hour display. The watch is powered by the self-winding Caliber 324/205, which is rhodium-plated, features fausses cotes decoration, and is stamped with the Seal of Geneva quality mark. The movement utilizes 34 jewels, a free-sprung Gyromax balance, and a 21K gold rotor. The watch is housed in a solid three-body case with a stepped bezel, concave curved lugs, and a transparent screwed-down case back. The silvered dial is finished with a combination of guilloche and brushed textures, accented by applied pink gold Arabic numerals and dart indexes. It includes a matching 18K pink gold Patek Philippe buckle and was originally sold in November 2006, accompanied by its Certificate of Origin.

Front view of the Patek Philippe Gondolo Calendario Ref. 5135R-001, showcasing the dial layout and pink gold case.
Front view of the Patek Philippe Gondolo Calendario Ref. 5135R-001, showcasing the dial layout and pink gold case. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Annual Calendar
Maker / attribution
Patek Philippe
Reference
5135R-001
Catalogue / lot identifier
119
Source-reported date
Sold in November 2006
Source-reported place
Switzerland
Source-reported serial
4385522

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 Construction

The Patek Philippe Ref. 5135R-001 features a tonneau-shaped, solid 18K pink gold case measuring 38 by 51 mm with a thickness of 11.5 mm. The three-body construction includes a polished finish, a stepped bezel, and concave, curved lugs. The case band incorporates correctors for the calendar functions, and the watch is completed by a transparent screwed-down case back with sapphire crystals.

The dial is designed with a two-tone guilloche and brushed silver aesthetic. It displays applied pink gold Arabic numerals at the 9 and 3 o'clock positions, complemented by dart indexes. The calendar displays are organized in apertures: the day of the week at 10 o'clock, the date at 12 o'clock, and the month at 2 o'clock. A sub-dial at 6 o'clock displays both moon phases and a 24-hour indicator, with pink gold dauphine hands providing the time indication.

Evidence for this section
  • “Three-body, solid, polished, stepped bezel, concave and curved lugs, correctors on the band, transparent screwed-down case back, sapphire crystals.”
  • “Guilloche and brushed silver with applied pink gold Arabic numerals and dart indexes on a plain reserve, apertures for the days of the week at 10, the date at 12, the months at 2 and the moon phases and 24-hour display at 6.”

Movement and Mechanics

The watch is powered by the self-winding Caliber 324/205 movement, which is rhodium-plated and finished with fausses cotes decoration. The movement contains 34 jewels and utilizes a straight-line lever escapement. It is equipped with a free-sprung Gyromax balance that is adjusted to heat, cold, isochronism, and 5 positions. A self-compensating flat balance spring and a shock absorber are utilized within the caliber.

Power is delivered through a 21K gold rotor. The movement carries the Seal of Geneva quality mark.

Evidence for this section
  • “Cal. 324/205, stamped with the Seal of Geneva quality mark, rhodium- plated, fausses cotes decoration, 34 jewels, straight-line lever escapement, free-sprung Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock absorber, self compensating flat balance spring, 21K gold rotor.”
  • “Accompanied by Certificate of Origin”

Condition and Authenticity

The auction description indicates that the dial, case, and movement are signed by Patek Philippe. The grading provided by the house classifies the overall condition of the object as 'AAA Excellent'. Specifically, the movement is graded as '1 As new', while the dial is listed as '1-01 As new'.

The case is categorized as '2 Very good'. The watch is confirmed to include its original hands and the associated Patek Philippe pink gold buckle. The documentation provided notes the initial sale date of the watch as November 2006, establishing the historical context of its release.

Evidence for this section
  • “Dial, case and movement signed.”
  • “Grading System Grade: AAA Excellent Case: 2 Very good Movement: 1 As new Dial: 1-01 As new”

Open research questions

  • What are the specific production start and end years for the reference 5135R-001?
  • Does the current movement performance align with the 'as new' grading provided in the auction documentation?

Source evidence

Recorded claims and source quotations for Patek Philippe Gondolo Calendario Ref. 5135R-001
FieldSource-reported valueSource quotation
MakerPatek Philippe“Patek Philippe, Genève”
Reference5135R-001“Ref. 5135R-001”
Case Number4385522“case No. 4385522”
Movement Number3425367“movement No. 3425367”
Dimensions38 x 51 mm“DIM. 38 x 51 mm.”
MovementCaliber 324/205“Cal. 324/205”
Sold DateNovember 2006“Sold in November 2006.”

Visible details

  • Applied pink gold Arabic numerals and dart indexes
  • Correctors positioned on the case band
  • Moon phases and 24-hour display at the 6 o'clock position
  • Pink gold dauphine hands

Research qualifications

  • The exact condition of the internal mechanism remains unverified beyond the auction house description
  • The provenance history between the initial 2006 sale and the current auction entry is not detailed

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

Terms in this record

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