Omega Speedmaster Professional Reference 145.022-74
Record status
Individual type · partial
Period
1975
Maker / issuer
OmegaThis Omega Speedmaster Professional, reference 145.022-74 ST, is a manually wound chronograph from 1975. The watch features an asymmetrical 42mm stainless steel case with twisted lugs, a black tachymeter bezel, and a matte black dial with three-register layout and luminous hour markers.
It is powered by the 17-jewel Omega calibre 861 movement, protected by an inner dust cover. The stainless steel caseback bears the Hippocampus medallion and the NASA flight-qualified inscription. The watch is accompanied by an Omega Extract from the Archives, which confirms the production date of August 27, 1975, and its original delivery to the United States. The watch is mounted on an Omega reference 1171 stainless steel bracelet with 633 end links.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Type
- Chronograph
- Bracelet
- Omega 1171 with 633 end links
- Movement
- Omega Calibre 861
- Reference
- 145.022-74 ST
- Case Diameter
- Approximately 42mm
- Place recorded
- Switzerland
- Movement Serial
- 31326XXX
- Production Date
- August 27, 1975
- Maker / attribution
- Omega
Design
- Movement
- Internally, the timepiece is equipped with the Omega calibre 861 movement, a manual-wind chronograph mechanism with 17 jewels. This movement utilizes a cam-operated system and features copper-coloured finishing. It is further protected within the case by an original-style inner dust cover. The movement serial number is 31326XXX, which the accompanying archive documentation correlates to the production year of 1975. The movement is part of the generation that succeeded the initial Moon-landing era models.
- Case and Dial
- The watch features an asymmetrical stainless steel case measuring approximately 42mm in diameter, characterized by twisted lugs. The case exterior includes an Omega-signed crown and a black tachymeter bezel with legible markings. The reverse side of the case features a pressed Hippocampus medallion surrounded by text referencing its NASA flight-qualified status. The dial is finished in matte black with a traditional three-register chronograph layout and white printed scales. The hour markers and hands are applied with luminous material that has developed a warm, aged patina. The dial is enclosed by a crystal, and the interior caseback is stamped with the reference number 145.022-74 ST.
- Visible features
- • Tritium-style luminous markers exhibit visible patina • Case back features stamped NASA flight-qualified inscription • Bracelet clasp is signed with Omega logo
- Documentation and Provenance
- The watch is provided with an official Omega Extract from the Archives, issued on March 12, 2021. This document verifies the watch's production date of August 27, 1975, the original delivery destination of the United States, and confirms the calibre 861 movement and bracelet configuration. The bracelet is a stainless steel reference 1171 with 633 end links, documented as the original configuration in the archives.
Identification
- Reference
- 145.022-74
- Serial number
- 31326XXX
- 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.
Research required
- Research required: Patina on dial markers and hands is consistent with age but not further specified as to material stability
- Research required: Dealer valuation is included in documentation but is not an indicator of current market value