Omega Speedmaster Professional Mark III

Technical characteristics

Type

Self-winding chronograph

Maker

Omega

Bracelet

Omega Holzer

Reference

ST 176.0002

Sale Date

November 13, 1972

Case Dimensions

40 x 52 mm

Movement Number

34246228

Movement Caliber

1040

Maker / attribution

Omega

Design

Visible features

• Satiné blue dial with applied faceted indexes • Orange and black central jet-shaped chronograph hand • Integrated brushed stainless steel Holzer bracelet • Tonneau-shaped Pilot-line case with hooded lugs

Case and Dial Design

The timepiece is housed in a stainless steel, tonneau-shaped Pilot-line case, which measures 40 mm by 52 mm with a thickness of 16 mm. The case features a brushed finish, a screwed-down case back embossed with the Seamaster logo, and integrated hooded lugs. The Pilot-line architecture was utilized by Omega for various chronograph and non-chronograph models during the 1970s. The satiné blue dial includes faceted black painted indexes and luminous dots. The display incorporates a tachometer scale reaching 500 units per hour, an inner five-minute Arabic numeral track, and an outer minute/fifth-second scale. Complications are arranged with subsidiary dials for seconds and a 12-hour register, a 24-hour day/night indicator, and a date aperture. Chronograph minutes are tracked via an orange and black central jet hand, complemented by luminous white baton hands.

Provenance and Condition

The watch was sold on November 13, 1972, and is presented with a contemporary Omega box and a Certificate of Authenticity. It is fitted with a stainless steel Holzer bracelet featuring a deployant clasp. The watch has been reviewed by the auction house, which notes the current configuration of the hands as service-related replacements. The grading assessment provided for the watch notes that the case is in good condition with slight scratching. The movement and the dial have also been graded as good within the auction catalogue’s system. No information is provided regarding the watch's history between its initial sale and its current appearance at auction.

Movement and Technical Specifications

This caliber is copper-colored and features 17 jewels. Technical components include a straight-line lever escapement, a monometallic balance, a shock-absorber system, a self-compensating flat balance spring, and a micrometer regulator. The overall construction is designed for water resistance, though the auction description includes specific condition reports regarding the internal and external components.

Identification

Reference

ST 176.0002

Serial number

34246228

Source note

Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.