Free tools Windows power users keep installed
One-click scans. No signup required.
The Omega Speedmaster ST 345.0809 is the 1985 Speedymoon: a 42 mm stainless-steel Speedmaster with a hand-wound Calibre 866, date and moonphase display, Hesalite crystal, and black tritium-lumed dial. Omega says it made 1,300 examples. The moonphase makes this an important Speedmaster variant, but it is not the same reference as the NASA-qualified Moonwatch configurations—and there is no basis for saying this model was worn on the Moon.
This is a reference-focused examination, not a report on a specific watch in hand. Individual examples can differ in originality, service components, condition, and documentation, so those details need to be assessed watch by watch.
What is the Speedmaster 345.0809?
Omega’s vintage archive dates reference ST 345.0809 to 1985 and identifies it as the first Speedmaster moonphase. The model is commonly called the Speedymoon. Its defining addition to the familiar Speedmaster chronograph layout is a moonphase display paired with a date indication.
Omega’s official model record specifies a stainless-steel case measuring 42 mm, baton hands, a black tritium-lumed dial, a Hesalite crystal, and a steel bracelet identified as reference 1447/805. It gives total production as 1,300 pieces. These are the reference’s published baseline specifications; a surviving watch may have replacement or service parts.
#1 Best Overall
- Stainless steel case
- Black dial
- Swiss-automatic movement
- Case diameter: 40mm
- Water resistant to 330 feet
Movement and complications
The 345.0809 uses hand-wound Calibre 866, a movement closely related to the Speedmaster’s Calibre 861. The additional calendar and moonphase functions distinguish it from a standard Speedmaster chronograph. An archive listing for a 1986 example describes its Calibre 866 as a 17-jewel mechanical chronograph with moonphase and date; the jewel count is documented for that listed example.
On an individual watch, date and moonphase correctors may be visible at the side of the case. Their presence and operation should be checked on the specific example rather than assumed from a reference description. Have a qualified watchmaker assess the setting functions and movement condition before relying on them.
Rank #2
- Rubber
- Rotating bezel, gmt
- Automatic-self-wind movement
- Case diameter: 40mm
- Water resistant to 330 feet
Why the Moonwatch distinction matters
The Speedymoon belongs to the Speedmaster family, but it should not be represented as the exact reference worn on the Moon. Omega explains that the 345.0809 lacks the “FLIGHT QUALIFIED BY NASA” caseback wording found on most Speedmasters because the moonphase complication was outside the scope of NASA’s qualification.
Omega’s FAQ identifies ST 105.012 and ST 145.012 as the references worn by Apollo 11, 12, 14, 15, 16, and 17 astronauts; it separately says Gene Cernan wore ST 105.003 during Apollo 17. That history is distinct from the later 345.0809 moonphase. The safest description is “moonphase Speedmaster,” not “the Moonwatch reference worn on the Moon.”
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Rank #3
- Model 310.30.42.50.01.002
Originality: what to inspect on a 345.0809
Collector documentation records variation among surviving Speedymoons, including bracelet references, end links, moon discs, bezels, and replacement components. A bracelet reference different from Omega’s listed 1447/805 baseline is a reason to investigate provenance, not proof by itself that a watch is incorrect: bracelet changes and conversions are possible. The guide also cautions that some strap-equipped watches may later have been fitted with bracelets.
- Reference and caseback: Check that the caseback and reference details are consistent with ST 345.0809 and the seller’s documentation.
- Bracelet and end links: Compare the fitted components with the watch’s documented history. Collector sources describe 1447, 1450, and 1479 bracelet examples and differing end links; do not assume every variation is factory-original.
- Dial, hands, and lume: Look for service replacements or components that differ from the stated black tritium-dial configuration. A replacement part can affect originality without making the watch automatically inauthentic.
- Crystal: The reference uses Hesalite. A collector guide discusses original crystals without a central Omega logo and later service replacements; that detail is not a standalone authentication test.
- Case and bezel: Assess polishing, wear, and component consistency in person. Photographs may not show enough to judge whether the case has lost its original definition.
- Movement and functions: Request movement and service documentation, and have the chronograph, date, and moonphase functions inspected by a competent watchmaker.
These checks help identify questions for an expert; they do not authenticate a watch on their own. Omega says a serial/reference check is an indication rather than a guarantee of authenticity. Its guidance for vintage owners points to authorized service centres.
Rank #4
- Model 310.32.42.50.01.001
Buying, condition, and servicing
For a vintage 345.0809, prioritize the individual watch’s condition and evidence over a seller’s broad claims about rarity or originality. Ask for clear caseback, dial, movement, bracelet, and clasp photographs; request any service records and details of replaced parts; and compare the serial and reference information with available documentation. Arrange an in-person assessment with an experienced watchmaker or Omega service centre before purchase when possible.
Omega recommends boutiques or authorized retailers for new watches and directs vintage owners to authorized service centres. That guidance can help with service and verification, but no serial/reference check should be treated as a guarantee. Service-part choices may also change the balance between originality, reliability, and ease of maintenance, so clarify what is fitted and what the buyer values most.
Best Value
- Omega Speedmaster Chronograph Automatic Silver Dial Men's Watch 324.30.38.50.02.001
No current market price is established here. Omega says pre-owned value varies with aesthetic and functional condition, supply and demand, and country; older price figures in specialist collector material are not a reliable current valuation. Compare recent, documented examples in the relevant market and account for service needs rather than treating a single asking price as a benchmark.
Quick Recap
Sources and further reference
- Omega’s vintage archive entry for ST 345.0809 for its model date, specifications, and stated production.
- Omega customer-service FAQ for buying, vintage service, pre-owned value, and astronaut-reference guidance.
- Roy & Sacha Davidoff SA archive for its specific 1986 example and stated movement details.
- Speedymoon collector guide for documented variation and originality considerations; treat these observations as specialist guidance, not definitive proof of factory configuration.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
