Watch Overview

Offered here is a vintage Omega Speedmaster Professional Mark III automatic chronograph, reference 176.002, dating to approximately 1972 based on the movement serial number. Introduced in 1971, the Mark III represents an important evolution of the Speedmaster line and was among the earliest automatic chronographs produced by Omega.

The watch features the distinctive tonneau-shaped stainless steel case design typical of early 1970s Omega sports watches. Its bold lugless case profile curves naturally around the wrist and reflects the futuristic design language of the period.

This model is powered by the original Omega caliber 1040 automatic chronograph movement, based on the Lemania 1340 architecture. The movement contains 22 jewels and features a central chronograph seconds hand and central chronograph minute hand, a 12-hour counter at 6 o’clock, a small seconds subdial combined with a 24-hour indicator at 9 o’clock, and a date display at 3 o’clock. The movement beats at 28,800 vibrations per hour and offers an approximate power reserve of 44 hours.

The sunburst blue dial features applied hour markers, luminous hands and indexes, and a contrasting chronograph minute hand with a distinctive orange “jet” shaped tip. The outer dial ring includes a tachymeter scale with a detailed minute track, reinforcing the Speedmaster’s motorsport heritage.

The watch is housed in a 42mm stainless steel tonneau case with pump chronograph pushers, a signed Omega crown, and a screw-down case back featuring the iconic Omega hippocampus medallion. It is fitted with its original stainless steel Omega bracelet.

The watch remains in very good vintage condition, fully inspected and authenticated by our in-house watchmaker, and is running accurately.

Product Details

General Specifications

• Brand: Omega
• Type: Wristwatch
• Model: Speedmaster Professional Mark III
• Reference: 176.002
• Year / Era: 1972 - Vintage
• Gender: Men's
• Country of Manufacture: Switzerland

Dial & Display

• Display: Analog
• Color: Sunbust blue
• Features: Applied hour markers, chronograph sub-dials, small seconds with 24-hour indicator, 12-hour counter, date display, tachymeter scale, luminous hands and indexes

Movement

• Type: Self-winding
• Caliber: Omega 1040 (based on Lemania 1340)
• Jewels: 22
• Some Features:
  • Small-second hand
  • Chronograph complication
  • Central chronograph seconds hand
  • Central chronograph minutes hand
  • 12-hour counter
  • Date calendar with quick-set
  • 24-hour sub-dial
• Power Reserve: Approx. 44 hours
• Frequency: 28,800 vph

Case & Band

• Material: Stainless Steel
• Case Shape: Tonneau/barrel
• Bezel: Fixed, smooth
• Back: Screw-in
• Crown: Signed, pull/push
• Band: Original stainless steel bracelet
• Max Wrist Size: Approx. 7 3/4" (19.7cm)
• Water Resistance: 50 meters / 164 feet / 5 ATM
• Case Back Markings: Omega Watch Co. Fab. Suisse Swiss Made Acier Inoxydable 176.002 - Hippocampus / Seahorse medallion

Case Measurements (mm)

• Case Size: 42
• Case Diameter w/Crown: 43
• Case Lug to Lug: 52
• Case Thickness: 16
• Lug Width: 22
• Band Width: 23.2

Additional Info

• Box & Papers: No
• Condition: The watch is in good condition, showing signs of wear consistent with age and use.
• Extras: Fully inspected and authenticated by our in-house watchmaker, confirming that it runs accurately.

About Second Hand Horology

At SECOND HAND HOROLOGY, we offer a curated selection of watches ranging from vintage to modern, including both brand-new and pre-owned timepieces. We’re committed to quality, accuracy, and integrity. Our listings feature:

Professional, unedited photography and clear, transparent descriptions. Every watch is thoroughly inspected and securely packaged to ensure a confident, seamless buying experience.

We also warmly invite you to visit our physical shop and explore the collection in person.

Contact Us

We appreciate you checking out our listing! Don’t hesitate to reach out with questions, offers, or just to talk watches — we love what we do and enjoy connecting with fellow enthusiasts.

Thank you for your business—we truly appreciate your support and look forward to serving you again in the future!

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