Omega Speedmaster Professional Chronograph ref. 145.012
Record status
Individual type · partial
Period
1968
Maker / issuer
OmegaThis vintage Omega Speedmaster Professional chronograph, reference 145.012, dates to 1968. It features a 42mm stainless steel case paired with a brown leather strap.
The matte black dial displays luminous linear indices and an outer track with one-fifth-second divisions. The dial configuration includes three subsidiary registers: a small seconds sub-dial at the 9 o'clock position, a 30-minute counter at 3 o'clock, and a 12-hour counter at 6 o'clock. The time is indicated by luminous linear hands, while the central chronograph hand is arrowhead-tipped. Power is provided by the manually-wound Caliber 321, developed based on Lemania mechanisms.
The source notes that the 145.012 reference was introduced in 1967 and represents the final generation of the Speedmaster series to utilize the Caliber 321. The watch includes an external tachymeter bezel.
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
- Date
- 1968
- Type
- Chronograph wristwatch
- Brand
- OMEGA
- Model
- Speedmaster Professional
- Function
- Manual-wind chronograph
- Reference
- 145.012
- Case diameter
- 42 mm
- Place recorded
- Switzerland
- Maker / attribution
- Omega
Design
- Case and Dial
- The watch is housed in a 42mm stainless steel case. The bezel, positioned around the dial, features a tachymeter scale. The dial is finished in matte black and is configured with luminous linear hour indices. Exterior minute and second track markings are present, along with a scale for one-fifth-second intervals. The dial layout utilizes three sub-registers. The small seconds indicator is located at the 9 o'clock position, a 30-minute recorder at the 3 o'clock position, and a 12-hour register at the 6 o'clock position. The primary time-telling hands are linear and luminous, complemented by a central chronograph hand with an arrowhead design.
- Visible features
- • Matte black dial with 'T SWISS MADE T' marking at the bottom • Arrowhead-tipped central chronograph hand • External tachymeter bezel with visible surface wear • Three-register layout with counters at 3, 6, and 9 o'clock
- Movement and Functionality
- The timepiece operates on the manual-winding Caliber 321. This movement was developed through the utilization of Lemania mechanisms. The reference 145.012, introduced in 1967, is identified as the final iteration within the Speedmaster line to incorporate this specific caliber. The watch includes a chronograph function with three specific counters. The system is manually wound and the watch is fitted with a brown leather strap.
- Documentation and Condition
- Technical information regarding the current operational status, maintenance history, or included accessories is not explicitly provided by the source. The condition of the watch components is intended to be evaluated by the viewer based on the provided photographs. The information provided in this record is derived from data supplied by the seller. The catalogue documentation does not constitute an independent authentication or evaluation of the watch's condition or originality.
Identification
- Reference
- 145.012
- 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: Specific technical condition and service history are not confirmed by the seller
- Research required: Authenticity of individual components has not been independently verified by the site