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The Encyclopedia of Horology

Wristwatch · Day-Date wristwatch

Rolex Day-Date Tridor Reference 18239B

Partially verified

This Rolex Day-Date wristwatch, referenced 18239B, features the "Tridor" design, characterized by the integration of three distinct colors of gold—yellow, white, and rose—within its construction. The watch is presented with a 36mm case crafted from white gold, paired with a yellow gold fluted bezel. The dial possesses a satin texture in a shade described as champagne or peach, featuring applied Roman numeral hour markers. At the 12 o'clock position, a disc displays the day of the week in English, while a date aperture is positioned at 3 o'clock beneath a cyclops lens. The bracelet is a three-color "President" style, incorporating white, yellow, and rose gold in its central links. According to the provided information, the watch dates to approximately 1993 based on its serial number and includes a handmade leather carry case. The auction description reports that the movement has been serviced.

Rolex Day-Date Tridor 18239B with tri-color gold bracelet and satin champagne-peach dial.
Rolex Day-Date Tridor 18239B with tri-color gold bracelet and satin champagne-peach dial. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Day-Date wristwatch
Maker / attribution
Rolex
Reference
18239B
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
circa 1993
Source-reported place
Switzerland
Source-reported serial
X501xxx

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

Design and Materials

The Rolex Day-Date Tridor is defined by the use of three distinct gold varieties: white, yellow, and rose gold. The 36mm watch case is constructed from white gold and is finished with a yellow gold fluted bezel. The satin-textured dial exhibits a color profile described as a mix of champagne and peach.

The bracelet is an integrated tri-color President style featuring white, yellow, and rose gold elements in the central links. This specific aesthetic configuration is consistent with the Tridor branding, which emerged in the late 20th century as a production variation within the Day-Date series.

Evidence for this section
  • “این ساعت مچی متعلق به سری Day-Date از برند شناخته‌شده Rolex و موسوم به مدل Tridor با رفرنس 18239B است.”
  • “ویژگی متمایز این نمونه، بهره‌گیری هم‌زمان از سه رنگ طلا شامل طلای زرد، طلای سفید و رزگلد (طلای صورتی) در ترکیب‌بندی آن است.”
  • “بند متصل به ساعت از نوع پرزیدنت سه‌رنگ (Tridor) متشکل از پیوندهای میانی ادغام‌شده از طلای صورتی، زرد و سفید است”

Technical Features and Dial

The watch displays the day of the week via an aperture at the 12 o'clock position in English. The date is visible through an aperture at the 3 o'clock position, which is fitted with a magnifying cyclops lens on the watch glass.

The dial features applied Roman numerals. The technical operation and mechanical state of the timepiece, including the claim of a recent service by the provider's watchmaker, are stated by the source.

Evidence for this section
  • “دیسک نمایشگر روز هفته در موقعیت ساعت ۱۲ به زبان انگلیسی تنظیم شده و پنجره تاریخ به همراه ذره‌بین مرسوم بر روی شیشه قرار دارد.”
  • “نشانگرهای ساعت به صورت اعداد رومی اعمال‌شده (applied) بر روی آن به چشم می‌خورند.”
  • “طبق ادعای منبع عرضه‌کننده، این ساعت مچی به طور کامل توسط ساعت‌ساز مجموعه سرویس فنی شده”

Provenance and Authentication

The provenance of the watch is linked to the serial number prefix X501xxx, which supports a production date of approximately 1993. The object is sold with a handmade leather pouch.

The source includes disclaimers regarding the verification of the watch's components and mechanical status. All technical and mechanical details are attributed directly to the seller, with no independent certification provided by the current hosting platform.

Evidence for this section
  • “بر اساس شماره سریال ساعت که با پیشوند X501xxx ثبت شده، سال تولید این ساعت حدود ۱۹۹۳ برآورد شده است.”
  • “پلتفرم زمانیتو هیچ‌گونه بررسی یا تأییدیه مستقلی را در خصوص اصالت قطعات، جزئیات داخلی یا وضعیت کارکرد آن ارائه نمی‌دهد.”

Open research questions

  • What is the specific internal caliber number associated with this serial range and reference?
  • Are the individual gold components of the Tridor bracelet identifiable by their specific alloy marks for white, yellow, and rose gold?

Source evidence

Recorded claims and source quotations for Rolex Day-Date Tridor Reference 18239B
FieldSource-reported valueSource quotation
MakerRolex“برند: Rolex”
Reference18239B“شماره رفرنس: 18239B”
Serial NumberX501xxx“شماره سریال: X501xxx”
Case MaterialWhite gold“جنس قاب: طلای سفید”
Bezel MaterialYellow gold“جنس بزل: طلای زرد (شیاردار)”
Production Datecirca 1993“بر اساس شماره سریال ساعت که با پیشوند X501xxx ثبت شده، سال تولید این ساعت حدود ۱۹۹۳ برآورد شده است.”
Bracelet TypeTridor President“بند متصل به ساعت از نوع پرزیدنت سه‌رنگ (Tridor)”

Visible details

  • Tri-color gold President bracelet links
  • Fluted yellow gold bezel
  • Applied Roman numeral hour markers
  • Cyclops date magnifier on crystal

Research qualifications

  • The source disclaims independent verification of internal components or original state
  • The precise production date is an estimation based on the serial number

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

Consulted source

ساعت مچی Rolex Day-Date Tridor رفرنس 18239B

Reviewed 2026-11-02 · Record 68e3f16283

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

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