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The Encyclopedia of Horology

Wristwatch · Chronograph wristwatch

Porsche Design by Orfina Chrono 1 Military

Partially verified

This Chrono 1 Military wristwatch, reference 7177, is a product of the collaboration between Porsche Design and the manufacturer Orfina. The watch features a steel case and a matching three-link bracelet, both finished with a black PVD coating that displays wear consistent with age. Measuring approximately 41 to 42 mm in diameter, the case houses a black dial with a pie-pan configuration. The dial incorporates three chronograph sub-dials and dual windows for the English-language day and date. A distinct red 3H symbol appears on the dial, indicating the use of tritium-based luminous material. The watch is powered by an automatic Lemania 5100 chronograph movement. The case back bears engravings confirming Swiss manufacture and water resistance to 10 atmospheres. According to the provided information, the watch has been serviced by a watchmaker.

Front view of the Porsche Design by Orfina Chrono 1 Military, showing the black dial, red 3H mark, and PVD-coated steel case.
Front view of the Porsche Design by Orfina Chrono 1 Military, showing the black dial, red 3H mark, and PVD-coated steel case. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Chronograph wristwatch
Maker / attribution
Porsche Design by Orfina
Reference
7177
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
mid-1970s
Source-reported place
Switzerland
Source-reported serial
38xx

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 Dial

The watch is housed in a steel case with a black PVD finish. The design features a pie-pan style dial with a traditional layout, incorporating three sub-registers for the chronograph functions. Two apertures at the three o'clock position display the day and date in English.

The dial is marked with a distinctive red 3H symbol, which signifies the presence of tritium luminous material on the hands and indices. Over time, the luminous material has developed a yellow patina, and the central orange chronograph hand has experienced some fading.

Evidence for this section
  • “بدنه فولادی این ساعت با پوشش مشکی PVD پرداخت شده”
  • “صفحه مشکی این ساعت با چیدمان سنتی پورشه دیزاین و سبک پای پن (pie pan) طراحی شده”
  • “نشان قرمز 3H روی صفحه است که اشاره به ماده شب‌نما بر پایه تریتیوم دارد”

Movement and Functionality

The movement is the automatic Lemania 5100 caliber, a chronograph mechanism noted for its functional, utilitarian design. The watch includes a matching black PVD-coated three-link bracelet.

The auction description reports that the movement has undergone a complete service by the provider's watchmaker and is ready for use.

Evidence for this section
  • “در قلب این ساعت، موتور اتوماتیک کرنوگراف کالیبر Lemania 5100 قرار گرفته است”
  • “این ساعت توسط ساعت‌ساز مجموعه به‌طور کامل سرویس شده است و برای استفاده آمادگی دارد”

Markings and Identification

The case back contains several identifying inscriptions, including details regarding the Swiss origin of the watch, the reference number 7177, and the water resistance rating of 10 atmospheres.

A serial number formatted as 38xx is present on the case back, which allows the production date to be attributed to the second half of the 1970s.

Evidence for this section
  • “شماره سریال پشت قاب با فرمت 38xx به نیمه دوم دهه ۱۹۷۰ میلادی بازمی‌گردد”
  • “در بخش پشتی قاب، حکاکی‌های ساخت سوئیس، مقاومت در برابر آب تا ۱۰ اتمسفر و مشخصات رفرنس مشاهده می‌شود”

Open research questions

  • Confirm exact dimensions for reference 7177 given the source's contradictory statements.
  • Verify if the 3H marking is original to this specific reference 7177 production batch.

Source evidence

Recorded claims and source quotations for Porsche Design by Orfina Chrono 1 Military
FieldSource-reported valueSource quotation
MakerPorsche Design by Orfina“Porsche Design by Orfina”
Reference7177“رفرنس 7177”
Serial38xx“شماره سریال پشت قاب با فرمت 38xx”
MovementLemania 5100“کالیبر Lemania 5100”
Case MaterialPVD-coated steel“بدنه فولادی این ساعت با پوشش مشکی PVD پرداخت شده”
Water Resistance10 ATM“مقاومت در برابر آب تا ۱۰ اتمسفر”
OriginSwitzerland“ساخت سوئیس”
Production PeriodMid-1970s“نیمه دوم دهه ۱۹۷۰”

Visible details

  • Red 3H marking on the dial indicating tritium
  • Orange central chronograph hand
  • Yellowed patina on the luminous hour markers
  • Black PVD coating with surface wear on case and bracelet

Research qualifications

  • Discrepancy between 41mm and 42mm case size in source text
  • No documentation or original box provided

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

Consulted source

ساعت مچی پورشه دیزاین Orfina مدل Chrono 1 Military رفرنس 7177

Reviewed 2026-11-02 · Record f0e79f5dc5

Terms in this record

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

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