Skip to content
The Encyclopedia of Horology

Wristwatch · GMT-Master wristwatch

Rolex GMT-Master Reference 1675 Wristwatch

Partially verified

This Rolex GMT-Master, reference 1675, is a steel wristwatch featuring a matte black Mk. IV dial and an Oyster bracelet. Dating to 1975, the watch is equipped with a 40mm steel case, a rotating 24-hour bezel with a "fat font" red-back insert, and a fourth 24-hour hand designed to track a second time zone. The luminous indices and hands exhibit yellow-gold tritium patina. The watch is presented on an Oyster bracelet, reference 7836, with 380 end links. The date display includes a metallic disk with open 6s and 9s. The auction description reports the watch is in working order but the service history remains unknown. The object is offered without original boxes or documentation. The overall aesthetic includes natural fading on the bezel insert and consistent patina across the dial components.

Front view of the Rolex GMT-Master reference 1675 featuring a matte black Mk. IV dial and a blue-red 'fat font' bezel insert.
Front view of the Rolex GMT-Master reference 1675 featuring a matte black Mk. IV dial and a blue-red 'fat font' bezel insert. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · GMT-Master wristwatch
Maker / attribution
Rolex
Reference
1675
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
1975
Source-reported place
Switzerland
Source-reported serial
40XXXXX

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 Bezel

The stainless steel case measures 40mm in diameter. The auction description reports that the case exhibits signs of normal use and shows slight evidence of previous polishing while retaining its thick, symmetrical lugs and chamfers.

The watch is fitted with a rotating 24-hour bezel insert of the "fat font" type. The red-back insert shows natural fading and color changes to both the blue and red segments, consistent with its age.

Evidence for this section
  • “بدنه استیل ۴۰ میلی‌متری”
  • “قاب ساعت دارای نشانه‌های صادقانه ناشی از استفاده عادی بوده و شواهد اندکی از پولیش در گذشته دارد”
  • “اینسرت بزل ۲۴ ساعته از نوع موسوم به «فونت درشت» (Fat Font) با پشت قرمز بوده که در رنگ‌های آبی و قرمز آن محو‌شدگی و تغییر رنگ طبیعی ناشی از گذر زمان دیده می‌شود”

Dial and Hands

The watch features a matte black Mk. IV dial. The tritium luminous indices have developed a yellow-gold patina. The handset matches the dial in terms of aging.

The date function is displayed via a metallic date disk which features open-style numerals for 6 and 9. Under ultraviolet light, the luminous material is reported to be free of degradation.

Evidence for this section
  • “صفحه مشکی مات این ساعت از نوع Mk. IV بوده و شاخص‌های شب‌نمای تریتیومی آن به رنگ زرد طلایی تغییر یافته‌اند”
  • “دیسک تاریخ فلزی نیز دارای اعداد ۶ و ۹ با طراحی باز (Open 6s and 9s) است”
  • “در بررسی زیر نور فرابنفش، زوال یا تخریبی در مواد شب‌نما دیده نشده است”

Bracelet and Operation

The watch is equipped with a reference 7836 steel Oyster bracelet featuring folded links and 380 end links. The bracelet comprises 12 links, described as suitable for wrists up to 7.5 inches.

According to the seller, the watch is currently in working condition, although the service history is not known. The timepiece is sold without accompanying boxes or documents.

Evidence for this section
  • “بند ساعت نیز از نوع استیل اویستر با پیوندهای تاخورده (رفرنس 7836) و اتصالات انتهایی شماره ۳۸۰ با ۱۲ قطعه است”
  • “طبق اعلام فروشنده، ساعت در حال کارکرد صحیح است اما تاریخچه سرویس آن نامشخص گزارش شده”
  • “فاقد متعلقات جانبی یا جعبه و اسناد همراه است”

Open research questions

  • Verification of the movement caliber model used in this specific serial range.
  • Confirmation of the bezel insert's originality relative to the 1975 production year.

Source evidence

Recorded claims and source quotations for Rolex GMT-Master Reference 1675 Wristwatch
FieldSource-reported valueSource quotation
MakerRolex“سازنده: رولکس (Rolex)”
Reference1675“شماره رفرنس: 1675”
Production Year1975“به سال ۱۹۷۵ تعلق داشته”
Dial TypeMk. IV“صفحه مشکی مات این ساعت از نوع Mk. IV بوده”
Bracelet Reference7836“بند ساعت نیز از نوع استیل اویستر با پیوندهای تاخورده (رفرنس 7836)”
Serial Number40XXXXX“شماره سریال: 40XXXXX”
Case MaterialStainless Steel“بدنه استیل ۴۰ میلی‌متری”
Included ItemsNone“فاقد متعلقات جانبی یا جعبه و اسناد همراه است”

Visible details

  • Matte black Mk. IV dial with yellow-gold tritium indices
  • Rotating 24-hour bezel with red-back fat font insert showing fading
  • Oyster bracelet reference 7836 with 380 end links
  • Steel case with thick lugs and chamfers

Research qualifications

  • Service history is unknown
  • Extent of past case polishing is not specified beyond reported minor evidence

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

Consulted source

ساعت مچی رولکس Rolex GMT-Master رفرنس 1675 با صفحه Mk. IV سال ۱۹۷۵

Reviewed 2026-11-02 · Record ac0decdedc

Terms in this record

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

Other gmt-master wristwatch records