Skip to content
The Encyclopedia of Horology

Wristwatch · Dress wristwatch

Audemars Piguet Automatic Cal. K2120 18ct wristwatch

Partially verified

This is an 18ct yellow gold automatic dress wristwatch manufactured by Audemars Piguet, dated by the source to circa 1974. The round case measures 34 mm in diameter excluding the unsigned fluted crown and features straight lugs. Its silver-white dial displays printed black Roman numeral hour markers and black index hands, inscribed 'AUDEMARS, PIGUET GENÈVE' below 12 o'clock, 'Automatic' in script above 6 o'clock, and 'SWISS' below the 6 o'clock numeral. The seller reports it is powered by an automatic 36-jewel calibre K2120 movement and fitted with a dark textured leather strap.

Front three-quarter view of the Audemars Piguet 18ct yellow gold automatic wristwatch
Front three-quarter view of the Audemars Piguet 18ct yellow gold automatic wristwatch — Vintage Gold Watches. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.vintagegoldwatches.com
Category
Wristwatch · Dress wristwatch
Maker / attribution
Audemars Piguet
Reference
AP1933
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
circa 1974
Country
Switzerland

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 Construction and Exterior Form

The watch features a round case constructed in 18ct yellow gold, fitted with straight lugs extending from the case body. The seller records the case diameter at 34mm excluding the winding crown, which is positioned at 3 o'clock.

Visible observation shows a yellow gold bezel and straight lugs attached to a dark textured strap. A fluted, apparently unsigned winding crown is located at the 3 o'clock position.

Evidence for this section
  • “Outstanding 18ct Yellow Gold Case with Wonderful Straight Lugs”
  • “Good-Sized Case, 34mm, Excluding the Correct Unsigned Crown”
  • “Fluted, apparently unsigned winding crown at the 3 o'clock position.”

Dial Inscriptions and Display

The face presents a silver-white dial configuration fitted with black index hands and Roman numerals running from 1 to 12 along the hour track.

Dial text includes the signature 'AUDEMARS, PIGUET GENÈVE' below 12 o'clock, with 'Automatic' positioned above 6 o'clock. Visual observation also confirms the word 'SWISS' printed directly below the Roman numeral VI at the bottom edge.

Evidence for this section
  • “Original Unrestored and Untouched Silver-White Dial with 1 – 12 Roman Numerals”
  • “The silver-white dial carries black ‘Index’ hands with 1 – 12 Roman numerals”
  • “Dial signed 'AUDEMARS, PIGUET GENÈVE' under 12 o'clock and 'Automatic' above 6 o'clock.”
  • “Word 'SWISS' printed below the Roman numeral VI at 6 o'clock.”

Reported Mechanism and Documentation Discrepancies

The seller dates the watch to circa 1974 and reports that it houses an Audemars Piguet Calibre K2120 36-jewel automatic movement. Internal movement markings, jewel count, and internal case references are not visible in the provided photograph and remain source-reported.

A divergence exists regarding the fitted accessory. While the listing text specifies a 'High Quality Brown Lizard Strap with Plain Gold-Plated Buckle', the visible record depicts a dark or black textured strap.

Evidence for this section
  • “Audemars Piguet Automatic Cal.K2120 18ct c1974”
  • “High Grade Audemars Piguet Cal.K2120, 36 Jewel Automatic Movement”
  • “High Quality Brown Lizard Strap with Plain Gold-Plated Buckle”
  • “Round yellow gold bezel and straight lugs attached to a dark textured strap.”

Open research questions

  • What reference number and case serial number are stamped inside the case back?
  • Does direct physical inspection of the movement confirm calibre K2120 markings, serial number, and jewel count?
  • Why does the source listing text describe a brown lizard strap when the photograph displays a dark/black textured strap?

Source evidence

Recorded claims and source quotations for Audemars Piguet Automatic Cal. K2120 18ct wristwatch
FieldSource-reported valueSource quotation
Case Material18ct yellow gold“Outstanding 18ct Yellow Gold Case with Wonderful Straight Lugs”
Case Diameter34mm“Good-Sized Case, 34mm, Excluding the Correct Unsigned Crown”
Movement CalibreCal. K2120“High Grade Audemars Piguet Cal.K2120, 36 Jewel Automatic Movement”
Dial FeaturesSilver-white dial with Roman numerals“Original Unrestored and Untouched Silver-White Dial with 1 – 12 Roman Numerals”
Seller ReferenceAP1933“VGW Reference: AP1933”
Strap Description (Reported)Brown lizard strap with plain gold-plated buckle“High Quality Brown Lizard Strap with Plain Gold-Plated Buckle”
Packaging (Reported)Hardwood presentation box included“High Quality Hardwood Presentation Box Included”

Visible details

  • Round yellow gold bezel and straight lugs attached to a dark textured strap.
  • Off-white to silver dial with black Roman numerals and black index hands.
  • Dial signed 'AUDEMARS, PIGUET GENÈVE' under 12 o'clock and 'Automatic' above 6 o'clock.
  • Word 'SWISS' printed below the Roman numeral VI at 6 o'clock.
  • Fluted, apparently unsigned winding crown at the 3 o'clock position.

Research qualifications

  • Internal movement and inner case back are not visible in the photograph; calibre K2120 and jewel count are source-reported.
  • The source description lists a brown lizard strap, though the attached strap in the photograph appears very dark or black with a crococilian/reptile texture.

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

Consulted source

Audemars Piguet Automatic Cal.K2120 18ct c1974 | Vintage Gold Watches

Reviewed 2026-10-21 · Record 488be39f36

Terms in this record

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

Other dress wristwatch records