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The Encyclopedia of Horology

Wristwatch · Chronograph

Seiko Chronograph 6139-6009

Partially verified

The Seiko 6139-6009 chronograph is an automatic wristwatch associated with the 1970s era. It features a 41mm stainless steel case, an acrylic crystal, and a dark blue dial with a red and blue tachymeter bezel, often referred to as a "Pepsi" scale. The watch is powered by the 6139 automatic movement, which was introduced by Seiko in 1969. The design includes dual chronograph pushers and a day-date display at the three o'clock position. The dial displays white luminous markers and hands, contrasted by an orange central chronograph hand and a sub-dial hand. The model is sometimes referred to as the "True Cevert" due to historical connections with Formula One driver François Cevert. The construction includes a specific crown placement and text layout on the dial.

Front view of the Seiko 6139-6009 on a red surface, showing the blue/red tachymeter bezel, dial details, and steel bracelet.
Front view of the Seiko 6139-6009 on a red surface, showing the blue/red tachymeter bezel, dial details, and steel bracelet. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Chronograph
Maker / attribution
Seiko
Reference
6139-6009
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
circa 1970s
Source-reported place
Japan

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

Movement and Functionality

The watch is equipped with the Seiko 6139 movement, a self-winding chronograph mechanism launched in 1969. This movement is notable for being one of the early automatic chronographs, competing against other contemporary calibers such as those from Zenith and Heuer. The movement drives the central chronograph seconds hand and features a integrated day-date display, which is positioned at the three o'clock mark on the dial.

The caliber 6139 is designed to function as an automatic system, reflecting a development period in watchmaking that prioritized internal integration over external modules. Its implementation in this reference supports the function of the chronograph pushers located on the side of the 41mm stainless steel case.

Evidence for this section
  • “این موتور یکی از اولین کرنوگراف‌های اتوماتیک جهان بود که در کنار رقبای سوئیسی مانند کالیبر ۱۱ هوییر و ال‌پریمرو زنیت عرضه شد”
  • “موتور ۶۱۳۹ سیکو که در این ساعت به کار رفته، یک موتور اتوماتیک قدرتمند است”

Design and Case Construction

The exterior of the 6139-6009 consists of a 41mm stainless steel case with a polished bezel. The aesthetic is defined by the blue and red tachymeter scale on the outer rim of the dial. The dial itself is dark blue, housing luminous hour markers and matching hands for improved legibility.

Additional design features include a sub-dial for chronograph measurement, accented with an orange hand, and a faceted or cut appearance near the crown area of the case.

Evidence for this section
  • “این ساعت دارای بدنه ۴۱ میلی‌متری از جنس فولاد ضدزنگ”
  • “صفحه آبی تیره با مقیاس سرعت‌سنج (تاکی‌متر) پپسی، ظاهر متمایز و جذابی به آن بخشیده است”

Historical Associations

This reference is frequently identified by collectors as the "True Cevert" model, a name derived from its link to the Formula One driver François Cevert. The association is rooted in historical photographic evidence that suggests the driver wore this specific reference during his career.

The identification of this model relies on specific details such as the text layout on the dial at the nine o'clock position and the case geometry near the crown.

Evidence for this section
  • “مدل «True Cevert» به دلیل ارتباط با اسطوره فرمول یک، فرانسوا سِوِر، به این نام شناخته می‌شود”
  • “رفرنس ۶۱۳۹-۶۰۰۹ ساعتی بوده که سِوِر از آن استفاده می‌کرده و این موضوع با عکس‌های تاریخی تأیید شده است”

Open research questions

  • Are there specific serial number ranges that confirm production in the early 1970s for this reference?
  • How many variations of the 6139 dial text layout exist that differentiate the 'True Cevert' from other 6139-6009 configurations?

Source evidence

Recorded claims and source quotations for Seiko Chronograph 6139-6009
FieldSource-reported valueSource quotation
MakerSeiko“برند: Seiko”
Reference6139-6009“رفرنس: 6139-6009”
Case MaterialStainless steel“جنس بدنه: فولاد ضدزنگ”
Movement6139 automatic“نوع موتور: اتوماتیک ۶۱۳۹”
Case Diameter41mm“قطر بدنه: ۴۱ میلی‌متر”
Dial ColorDark blue“رنگ صفحه: آبی تیره”
Country of ManufactureJapan“Country: ژاپن”
Chronograph TypeAutomatic“این موتور یکی از اولین کرنوگراف‌های اتوماتیک جهان بود”

Visible details

  • Blue and red "Pepsi" tachymeter bezel
  • Day-date window at the 3 o'clock position
  • Stainless steel multi-link bracelet with folding clasp
  • Orange central chronograph hand

Research qualifications

  • Historical attribution to François Cevert is based on historical photos rather than primary documentation
  • Exact date of manufacture within the 1970s is not specified in the source

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

Consulted source

ساعت مچی کرنوگراف Seiko مدل True Cevert رفرنس 6139-6009

Reviewed 2026-11-02 · Record 7fd72678f3

Terms in this record

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

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