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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteThe Omega Speedmaster Professional 145.012 is regarded as the last Speedmaster reference fitted with the manual-wind Caliber 321. It sits at the end of the 321 generation, before the 145.022-68 successor. That makes the reference one of the last Caliber 321 Speedmasters—not proof that any particular example was among the final watches made.
Why the 145.012 is considered one of the last
The 145.012’s significance is its place in the movement transition: collector histories identify it as the final Speedmaster reference associated with Caliber 321. The later 145.022-68 succeeded it and belongs to the next movement generation. The distinction is about reference history, not an exact production ranking for an individual watch.
Fratello’s 2019 buyer’s guide estimates that 27,000–28,000 examples were made and describes the 145.012 as the easiest Caliber 321 Speedmaster to find. That is a secondary collector estimate, not an official Omega production count, and it does not establish current availability or market value. Fratello’s Speedmaster 145.012 buyer’s guide
When was the 145.012 made?
Dates vary depending on whether a source is describing production or delivery. Fratello dates production to 1967–1968 and notes that some watches were delivered in 1969. A specialist serial-number guide lists the ST145.012-67/68 as spanning serials 24,066,xxx–26,554,xxx and production years 1967, 1968, and 1969. Treat that range as a collector reference, not a factory certificate. Fratello’s buyer’s guide · Omega serial-number guide
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- Stainless steel case
- Black dial
- Swiss-automatic movement
- Case diameter: 40mm
- Water resistant to 330 feet
A Phillips catalogue illustrates why the distinction matters. It documents one 145.012-68SP, serial 26,552,500, whose Omega certificate states that it was produced on October 30, 1968 and delivered to Omega’s U.S. agent on December 6, 1968. Those dates describe that specific watch; they do not establish the production or delivery history of every 145.012. Phillips catalogue entry
How it compares with the 145.022-68
| Point of comparison | 145.012 | 145.022-68 |
|---|---|---|
| Movement generation | Associated with manual-wind Caliber 321 | Successor movement generation; it replaced the 145.012 |
| Historical position | Final Speedmaster reference identified with Caliber 321 | Successor introduced around 1968 in the historical transition |
| Dating caveat | Production generally dated to 1967–1968; some deliveries occurred in 1969 | Exact production and delivery dates vary by individual watch |
| Evidence for an individual watch | Serials and watch-specific Omega documentation can help establish its history | Use the individual watch’s records and inspection; a reference alone does not establish originality |
The transition is a useful way to understand the 145.012, but neither a reference number nor a broad serial range proves that a particular watch is original or identifies its exact place in production. Fratello’s buyer’s guide · Omega heritage overview
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What details are associated with the reference?
A Sotheby’s catalogue describes its stainless-steel 145.012 example with manual Caliber 321, a DON (“dot over ninety”) tachymeter bezel, an applied Omega dial logo, and tritium markers. These are details of that catalogued watch, not a universal specification checklist or proof that parts on another example have never been replaced. Sotheby’s catalogue entry
General Speedmaster histories place the 145.012 in the Professional-dial, asymmetrical-case lineage, but condition and originality must be judged watch by watch. An apparently period-correct bezel or dial does not by itself establish that it belongs to that specific watch.
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What to check before buying a 145.012
Ask for clear, detailed photographs and records before relying on the reference or a seller’s description. A qualified vintage-watch specialist can inspect the watch in person when possible.
- Movement and serial: request a clear movement photograph showing the caliber and serial, and compare the serial with any documentation offered.
- Case and reference: ask for images of the inside caseback and reference markings. Check that the case details are consistent with the claimed reference.
- Dial, hands, and bezel: inspect each part for condition and consistency. A DON bezel, applied logo, or tritium markers should not be treated as universal proof of originality.
- Service history and paperwork: review service records and any Omega archive or production documentation. Such records can support a watch’s history but do not, by themselves, prove every component is original.
- Condition before price: establish what is original, replaced, repaired, or unknown before comparing asking prices. The reference number alone cannot settle those questions.
The cited sources do not provide a complete official authentication protocol. For a purchase decision, the most useful evidence is the combination of the individual watch’s movement, serial, case, visible components, service history, documentation, and expert inspection.
Is the 145.012 Buzz Aldrin’s Moon watch?
Do not identify the 145.012 as Buzz Aldrin’s watch. It is distinct from the 105.012 most often associated with Aldrin in historical accounts. The 145.012 belongs to the late pre-Moon/Caliber 321 generation, but claiming that a specific watch was worn by an astronaut requires watch-specific provenance evidence. Omega heritage overview
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