Wristwatch · Calendar & moon-phase watch

Audemars Piguet Ref. C20447 Day/Date Calendar Wristwatch

Partially verified

This Audemars Piguet Ref. C20447 is an 18 karat yellow gold day/date calendar wristwatch dated to circa 1990 by the source. The circular watch case measures 33.00 mm in diameter and features a stepped or fluted bezel alongside a snap-on case back. Its cream dial displays painted Roman numerals, gold pencil hands, a date subdial at 3 o'clock, and a day subdial at 9 o'clock. According to the auction listing, it is powered by a self-winding jeweled lever movement and is fitted with a black alligator strap secured by an 18 karat yellow gold buckle.

Front three-quarter view of the Audemars Piguet Ref. C20447 Day/Date wristwatch on black strap — Hindman. Rights pending — permission not yet requested. Original source

Catalogue identity

Source: www.bidsquare.com
Category: Wristwatch · Calendar & moon-phase watch
Form: Day/date calendar wristwatch
Maker / attribution: Audemars Piguet
Reference: C20447
Catalogue / lot identifier: 3006
Source-reported date: Circa 1990
Source-reported place: Not established

Maker profile: Audemars Piguet — history, key models and current watchmaking.

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

Object Identity and Case Construction

The Audemars Piguet Ref. C20447 is an 18 karat yellow gold day/date calendar wristwatch, attributed by the source to circa 1990. The circular case measures 33.00 mm in diameter and features a fluted bezel and a snap-on case back.

Observed condition issues include scattered superficial scratches and nicks on the bezel, lugs, and case back. The case back stamp is reported as clear and distinct.

Evidence for this section

“An 18 Karat Yellow Gold Ref. C20447 Day/Date Calendar Wristwatch, Audemars Piguet, Circa 1990”
“33.00 mm case diameter”
“fluted bezel, circular case, snap on case back”
“The bezel, lugs and case back show scattered superficial scratches and nicks, the case back stamp is clear and distinct.”

Dial and Calendar Functionality

The watch features a cream dial signed 'AUDEMARS PIGUET' with painted Roman numerals and gold pencil hands. It is equipped with calendar sub-registers for the date at 3 o'clock and the day at 9 o'clock.

Under 10X magnification, the dial shows no discoloration or cracks, and the painted markers remain clear. The crystal has minute nicks at the edge, and the hour and minute hands exhibit minor spotting.

Evidence for this section

“cream dial signed AUDEMARS PIGUET, painted Roman numerals, gold pencil hands, subdial at 3 o'clock for date, subdial at 9 o'clock for day”
“The calendar subdials progress correctly.”
“The crystal shows some very minute nicks to the edge at 10X magnification, the dial shows no discoloration or cracks”
“the hour and minute hands show very minor spotting under 10X magnification”

Movement and Mechanical Status

The movement is described as a self-winding jeweled lever movement. The source reports that the watch winds, sets, and runs, and the rotor is freely rotating.

Professional timing or verification of the internal mechanical condition is not recorded in the source material.

Evidence for this section

“self-winding jeweled lever movement”
“The watch winds, sets and runs but has not been timed for accuracy.”
“The rotor is freely rotating.”

Open research questions

What is the specific movement caliber number for Audemars Piguet reference C20447?
What is the full production range for the reference C20447?

Source evidence

Recorded claims and source quotations for Audemars Piguet Ref. C20447 Day/Date Calendar Wristwatch
Field	Source-reported value	Source quotation
Case Material	18 Karat Yellow Gold	“An 18 Karat Yellow Gold Ref. C20447 Day/Date Calendar Wristwatch”
Case Diameter	33.00 mm	“33.00 mm case diameter”
Dial Description	Cream dial signed AUDEMARS PIGUET with painted Roman numerals	“cream dial signed AUDEMARS PIGUET, painted Roman numerals”
Calendar Subdials	Date at 3 o'clock and day at 9 o'clock	“subdial at 3 o'clock for date, subdial at 9 o'clock for day”
Movement Type	Self-winding jeweled lever movement	“self-winding jeweled lever movement”
Bezel	Fluted bezel	“fluted bezel”
Strap and Buckle	Black alligator strap and 18 karat yellow gold buckle	“black alligator strap marked AUDEMARS PIGUET, 18 karat yellow gold buckle stamped AUDEMARS PIGUET.”
Accessories	Accompanied by an outer box and inner leather case	“Accompanied by an outer box and inner leather case signed AUDEMARS PIGUET.”

Visible details

Circular yellow gold case with stepped or fluted bezel and downturned lugs.
White or cream dial with black Roman numerals and two auxiliary sub-registers at 3 and 9 o'clock.
Fitted to a textured black leather strap.

Research qualifications

Movement and case back interior are not shown in the available photographs.
Operational accuracy and internal mechanical condition are source-reported only.

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