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The Encyclopedia of Horology

Wristwatch · Quartz wristwatch

Cartier Santos Ref. W20009C5 18K Yellow Gold Wristwatch

Partially verified

This Cartier Santos wristwatch is crafted in 18k yellow gold, featuring an integrated brushed gold bracelet adorned with signature exposed screws. Its off-white dial displays black Roman numeral hour markers, an inner railway minute track, blued sword hands, and a discreet signature within the VII numeral. A date window is positioned above the 6 o'clock mark. Powered by a quartz movement, the watch is enclosed in a square case measuring 42.00 by 29.00 mm including the lugs. The case back is stamped with Cartier hallmarks and model reference markings.

Front three-quarter view of the Cartier Santos 18k yellow gold wristwatch on matching bracelet
Front three-quarter view of the Cartier Santos 18k yellow gold wristwatch on matching bracelet — Freeman's / Hindman. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
hindmanauctions.com
Category
Wristwatch · Quartz wristwatch
Maker / attribution
Cartier
Reference
W20009C5
Catalogue / lot identifier
24
Source-reported date
Not established
Country
Switzerland
Source-reported serial
887902C 0257

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 Bracelet Construction

This Cartier Santos, reference W20009C5, is constructed from 18k yellow gold. The watch features an integrated brushed gold link bracelet secured with screws and a deployant clasp.

The case dimensions, inclusive of the lugs, are recorded as 42.00 by 29.00 mm. The bracelet has an approximate inner circumference of 7 inches, with widths ranging from 18.00 to 13.00 mm.

Evidence for this section
  • “42.00 x 29.00 mm case dimensions inclusive of lugs”
  • “brushed gold link bracelet joined by screws, deployant clasp with Cartier logo”
  • “7 inches inner circumference”
  • “strap measures approximately 18.00-13.00 mm wide”

Dial and Aesthetic Features

The timepiece features an off-white dial with black Roman numeral hour markers. It includes an inner railway-style minute track, a date aperture at the 6 o'clock position, and the brand's 'secret signature' located within the VII numeral.

The square bezel is secured by eight visible screws surrounding the sapphire crystal. The winding crown is set with a dark cabochon or faceted gem and is flanked by protective crown guards.

Evidence for this section
  • “off white dial, black Roman numerals with secret signature at 7 o'clock, date aperture at 6 o'clock”
  • “Square bezel secured by eight visible screws around the sapphire crystal”
  • “Crown set with a dark cabochon or faceted gem, flanked by protective crown guards”

Mechanism and Operational Status

The watch is powered by a quartz movement. According to auction records, the watch was not running at the time of cataloging and may require servicing.

The case back is stamped with 'santos de Cartier Quartz 18K', 'SWISS MADE', and the serial number '887902C 0257'. The clasp is stamped with the maker's mark, 'Cartier', Swiss hallmarks, '18K', and '750'.

Evidence for this section
  • “quartz movement”
  • “The timepiece is not running at time of cataloging and may need servicing”
  • “Case back stamp: santos de Cartier Quartz 18K (Swiss hallmarks)(maker's mark) SWISS MADE 887902C 0257”
  • “Clasp stamp: (maker's mark) Cartier (Swiss hallmarks) 18K 750”

Open research questions

  • What is the specific production date range for the serial number 887902C 0257?
  • Does the lack of operation indicate a battery exhaustion or a failure of the quartz electronic module?

Source evidence

Recorded claims and source quotations for Cartier Santos Ref. W20009C5 18K Yellow Gold Wristwatch
FieldSource-reported valueSource quotation
Case Dimensions42.00 x 29.00 mm inclusive of lugs“42.00 x 29.00 mm case dimensions inclusive of lugs”
Movement TypeQuartz“quartz movement”
Case Back Stampsantos de Cartier Quartz 18K (Swiss hallmarks)(maker's mark) SWISS MADE 887902C 0257“santos de Cartier Quartz 18K (Swiss hallmarks)(maker's mark) SWISS MADE 887902C 0257”
Dial FeaturesOff white dial, black Roman numerals with secret signature at 7 o'clock, date aperture at 6 o'clock“off white dial, black Roman numerals with secret signature at 7 o'clock, date aperture at 6 o'clock”
Weight75.40 dwt“75.40 dwt.”
Total Weight75.40 dwt“75.40 dwt.”
Included AccessoriesCartier box“Accompanied by a Cartier box.”

Visible details

  • Square bezel secured by eight visible screws around the sapphire crystal
  • Crown set with a dark cabochon or faceted gem, flanked by protective crown guards
  • Brushed yellow gold multi-link bracelet with dual decorative screws on each link segment

Research qualifications

  • Source notes the timepiece was not running at time of cataloging and may need servicing
  • Movement interior and case back stamps are not visible in the photographs

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

Consulted source

CARTIER, 18K YELLOW GOLD REF. W20009C5 'SANTOS' WRISTWATCH | Freeman's

Reviewed 2026-10-21 · Record 0b3621006d

Terms in this record

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

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