The Omega Speedmaster went from a 1957 racing chronograph to the first watch worn on the Moon, and the Moonwatch Professional you can buy today lists at $7,800 new.
Nothing about the 1957 launch pointed to space. Omega built a sports chronograph; seven years later NASA ran a formal tender, tested three chronographs and found one that survived.
This guide follows the watch from the CK 2915 to Apollo 13, explains what changed between Calibre 321 and 3861, and covers the part most histories skip: which Moonwatch to buy in 2026. Every date, specification and price here was checked against Omega’s and NASA’s own records, and we say so where they disagree.
Prices and market data as at October 2026. Always verify with authorised dealers.
TL;DR — The Story of the Moonwatch: Built for racing, proven for space
Omega launched the Speedmaster in 1957 as a racing chronograph. After a formal 1964 tender, NASA tested it against a Rolex and a Longines-Wittnauer; only the Omega passed, and it flew on Ed White’s spacewalk on 3 June 1965. Buzz Aldrin wore a Speedmaster 105.012 on the Moon in 1969, and a Speedmaster timed the 14-second Apollo 13 burn. Today the Master Chronometer Moonwatch lists at $7,800 in Hesalite and $9,000 in sapphire, and the column-wheel Calibre 321 at $17,300. For most buyers, the Hesalite 3861 is the one.
Contents
1957: a racing chronograph, not a space watch
Omega launched three professional watches in 1957: the Speedmaster, the Seamaster 300 and the Railmaster. The Speedmaster CK 2915 was a sports chronograph whose look owed more to the dashboard clocks of Italian sports cars than to anything aeronautical. It was the first chronograph wristwatch to put the tachymeter scale on the bezel rather than printing it on the dial. It measured 38.6 mm and wore the Broad Arrow hands that gave the reference its nickname.
The design is credited to Claude Baillod, working under Pierre Moinat’s product team. Inside sat Calibre 321, a manual-winding column-wheel chronograph and Omega’s version of the Lemania 2310, which Lemania technical director Albert Gustave Piguet developed as the CH 27 and launched in 1942; Omega adopted it as the 321 in 1946. The CK 2915 ran from 1957 to 1959 in three iterations, -1, -2 and -3, at 18,000 vph.
Collectors treat it as the grail, and it carries a warning: in November 2021 a CK 2915-1 sold at Phillips for CHF 3,115,500 including premium, a Speedmaster record, and Omega later confirmed the watch had been assembled from mixed parts. For buyers: originality is what you pay for in any pre-owned Moonwatch, so verify it.
1962–1965: how NASA chose the Speedmaster
Astronauts picked the Speedmaster before NASA did. Wally Schirra wore his own CK 2998-4 on Sigma 7 on 3 October 1962, the first Omega in space; John Glenn had carried a Heuer stopwatch earlier that year. Deke Slayton, Gordon Cooper and Schirra all bought CK 2998s privately in the early 1960s, which is probably where the myth that NASA bought its watches from a Houston jeweller comes from.
The real route was a tender. On 21 September 1964 Slayton, NASA’s flight crew operations director, issued a memo asking for a durable, accurate chronograph. Engineer James Ragan sent a request for quotation to about ten makers and four replied. Hamilton sent a pocket watch and was disqualified. That left a Rolex 6238, a Longines-Wittnauer 235T and Omega’s Speedmaster 105.003 with Calibre 321. Omega’s own account says four brands were invited; three watches were actually tested.
NASA ran eleven tests, with a permitted average deviation of six seconds a day afterwards:
- High temperature: 70 °C for 48 hours, then 93 °C for 30 minutes in a partial vacuum
- Low temperature: −18 °C for four hours
- Vacuum: heated, then cooled to −18 °C, several cycles
- Humidity: ten 24-hour cycles above 95%, 25 to 70 °C
- Corrosion: oxygen at 70 °C for 48 hours
- Shock: six 40 g shocks in six directions
- Acceleration: 7.25 g for about five minutes, then 16 g for 30 seconds
- Low pressure: 90 minutes at 70 °C, then 30 minutes at 93 °C
- High pressure: 1.6 atmospheres for 60 minutes
- Vibration: 5–2,000 Hz at 8.8 g on three axes
- Noise: 130 dB, 40–10,000 Hz, 30 minutes
The Rolex failed the humidity test (the movement stopped) and the high-temperature test, and the Longines-Wittnauer failed high temperature when its crystal warped. Only the Speedmaster passed.
The 105.003 first flew on Gemini 3 on 23 March 1965. The date of the qualification itself is disputed: Omega files it under 1 March 1965, while the archive paperwork points to a formal flight qualification on 1 June 1965, with testing finished earlier. On 3 June 1965 Ed White wore a Speedmaster 105.003 on Gemini 4, America’s first spacewalk; accounts differ on whether he wore one or two.
The ST105.003 was the straight-lug 39.7 mm watch NASA tested. The ST105.012 was the first Professional, with a 42 mm asymmetric case and crown guards added after NASA flagged the risk of pushers breaking off. The ST145.012 ran from 1967 to 1968, and the last Calibre 321 Speedmaster left in October 1968. Accounts date the 105.012 to 1963 or 1964.
For buyers: today’s Moonwatch follows the 105.012 template, while the Calibre 321 steel re-edition copies the 105.003 of the White era.
1969: the Moon
The first Moonwalk began at 02:56 GMT on 21 July 1969, and from that day the Speedmaster was the Moonwatch. Armstrong and Aldrin both carried Speedmaster Professionals, ref. 105.012, and Michael Collins wore a 145.012 in lunar orbit.
Armstrong’s stayed in the Lunar Module. In his 1969 technical debrief he explained that the mission timer was out, so the crew left one wristwatch inside in case the one taken outside got damaged. Years later he could not recall deciding that, but Aldrin remembered the same reason. So the watch on the surface was Aldrin’s, and he later said he did not think he looked at it.
NASA transferred Armstrong’s watch to the Smithsonian in 1973. Aldrin’s never arrived: it went missing in transit around 1971, and its whereabouts are still unknown.
For buyers: the watches that went to the Moon ran Calibre 321. If you want that movement, buy the 321. If you want the look, the Hesalite 310.30.42.50.01.001 is as close to Aldrin’s 105.012 as a current watch gets.
1970: Apollo 13 and the 14 seconds
Apollo 13 launched on 11 April 1970, an oxygen tank exploded on 13 April and the crew splashed down on 17 April after 142 hours, 54 minutes and 41 seconds All three crewmen wore Speedmaster Professionals. NASA’s engineering account lists the manual course-correction burn, MCC-5, at 105:18:28 to 105:18:42 ground elapsed time: 14.0 seconds to steepen the re-entry angle to −6.52 degrees. It says the command module pilot, Jack Swigert, called out engine on and off and tracked time to go.
NASA’s engineering paper does not name the watch; Omega’s account, backed by the crew, is that Swigert timed the burn on his Speedmaster because the onboard timers were down. On 5 October 1970 astronaut Thomas Stafford presented Omega with NASA’s Silver Snoopy Award on the crew’s behalf.
For buyers: the Snoopy editions are novelty purchases. A standard Moonwatch carries the same history for less.
Calibre 321 to 861 to 1861 to 3861
The 321 had a column wheel, a free-sprung balance and an overcoil hairspring. The 861, introduced with ref. 145.022 in 1968, swapped the column wheel for a cam-lever that was cheaper to build and ran at 21,600 vph instead of 18,000. The 1861 arrived in 1997 with ref. 3570.50 as the final 861 revision, rhodium plated.
The 3861 debuted in 2019 in the Apollo 11 50th Anniversary editions and became the standard Moonwatch on 5 January 2021, although Omega’s Speedmaster timeline files it under 2020. Omega changed about half the parts against the 1861, adding a Co-Axial escapement, silicon hairspring, 15,000 gauss resistance, Master Chronometer certification and hacking seconds, but kept the cam. The 321 returned in 2019, first in platinum and then in steel in January 2020, rebuilt from the ground up with the help of a tomographic scan of Gene Cernan’s Moon-worn 105.003.
| Calibre | Years | Frequency | Power reserve | Escapement | Notes |
|---|---|---|---|---|---|
| 321 | 1957–1968 | 18,000 vph | 44 h | Lever | Column wheel, 17 jewels, Lemania 2310 base |
| 861 | 1968–1997 | 21,600 vph | 45 h | Lever | Cam lever, cheaper, 18 jewels (861A figures) |
| 1861 | 1997–2021 | 21,600 vph | 48 h | Lever | 861 with rhodium plating, 18 jewels |
| 3861 | 2021– (limited editions 2019) | 21,600 vph | 50 h | Co-Axial | Master Chronometer, 15,000 gauss, hacking, 26 jewels |
| 321 revival | 2019– | 18,000 vph | 55 h | Lever | Column wheel, 17 jewels, no METAS or COSC certification |
For buyers: a pre-owned 861 or 1861 lacks hacking, the Co-Axial escapement and magnetic protection, but the 3861’s gains are incremental. The Moonwatch stood still mechanically from the 1990s while rivals like the Daytona moved on (see our Rolex Daytona history).
Which Moonwatch to buy today
The 2021 3861 launched about 20% above the model it replaced. Prices below are Omega US list prices and dealer asking prices checked on 3 October 2026. Our Speedmaster buying guide and Omega hub cover the wider range.
Moonwatch Professional 3861: Hesalite or Sapphire Sandwich
Both are 42 mm steel watches with the 3861, a 50-hour reserve, 15,000 gauss resistance and 50 m water resistance. The Hesalite, 310.30.42.50.01.001, lists at $7,800 at Omega US, with a Hesalite crystal and a solid caseback bearing the Seahorse medallion. The Sapphire Sandwich, 310.30.42.50.01.002, lists at $9,000, with a domed sapphire crystal, transparent caseback, applied logo and polished intermediate links. The $1,200 buys scratch resistance and a view of the movement. The Hesalite is slightly thicker, 13.58 mm against 13.18 mm, and closer to what the astronauts wore.
Speedmaster Calibre 321 in steel (311.30.40.30.01.001)
This lists at $17,300, over twice the Hesalite. It is a 39.7 mm straight-lug watch modelled on the 105.003, with a sapphire crystal, transparent caseback, black ceramic bezel with a white enamel scale and the column-wheel 321 with a 55-hour reserve.
On 3861 versus 321, the 3861 wins on certified accuracy, magnetic resistance, hacking and price. The 321 wins on movement architecture, finishing and period proportions, but it carries no Master Chronometer or COSC certification, and long-term owners have reported magnetism problems, with rates drifting as far as 25 seconds a day. Buy the 321 only if the column wheel and the 39.7 mm White-era proportions are the point.
Pre-owned 1861 and 861 Professionals
The 1861 Moonwatch, 311.30.42.30.01.005, sold from 2014 until January 2021 and is the value route: hand-wound, Hesalite, and the design most people picture. On 3 October 2026 Bob’s Watches listed one at $5,995 and a 145.022-71 with the 861 at $6,495. Recent dealer asking prices for 145.022s have run $4,495 to $7,495, and a good 1970s example in Europe typically sits around €4,000–5,000.
Pre-owned 3861s at the same dealer were $6,995 in Hesalite ($805 under list) and $7,295 in sapphire ($1,705 under list). These are one dealer’s asking prices, not sales prices. On a tighter budget, see our guide to watches that hold value under $5,000.
Alternatives: FOIS and the ’57
The First Omega in Space is a 39.7 mm Calibre 3861 take on the CK 2998. The Speedmaster ’57 is the retro alternative; read our Speedmaster ’57 review.
| Reference | Calibre | Crystal | Bracelet | US retail or asking price | Suits |
|---|---|---|---|---|---|
| 310.30.42.50.01.001 | 3861 | Hesalite | Steel, brushed links | $7,800 (Omega) | Most buyers |
| 310.30.42.50.01.002 | 3861 | Sapphire | Steel, polished-brushed | $9,000 (Omega) | Daily wear, display back |
| 311.30.40.30.01.001 | 321 | Sapphire | Steel | $17,300 (Omega) | Collectors, 39.7 mm straight lugs |
| 311.30.42.30.01.005 | 1861 | Hesalite | Steel, screwed links | $5,995 asking (Bob’s) | Value, classic Moonwatch |
| 145.022-71 | 861 | Hesalite | Varies, check | $6,495 asking (Bob’s) | Vintage fans with an Extract |
What to check before buying pre-owned
- Service history: ask for Omega or specialist invoices showing which parts were replaced.
- Bezel: a 145.012 has the dot over the 90, while the later 145.022 has it next to the 90 A mismatch suggests a replaced bezel.
- Dial, hands and lume: they should match each other and the era. The 1997 update moved from tritium to Luminova.
- Magnetism: 861 and 1861 movements lack the 3861’s protection, so ask for a timing printout.
- Box, papers and Extract of the Archives: Omega’s extract gives the production or shipping date and original destination, and can correct serial-number tables.
- Model: confirm it is a Professional, not a Reduced (see Reduced vs Professional). Then run it through our Pre-Purchase Toolkit as the inspection checklist.
Because it was on the wrist for Apollo 11’s first Moonwalk on 21 July 1969. Buzz Aldrin wore a Speedmaster Professional, ref. 105.012, on the surface, while Neil Armstrong left his in the Lunar Module because the mission timer was out.
No. NASA ran a formal tender in 1964, after a 21 September memo from Deke Slayton. The jeweller story probably comes from astronauts Slayton, Cooper and Schirra buying their own CK 2998 Speedmasters in the early 1960s. NASA then tested watches sent by Omega, Rolex and Longines-Wittnauer.
NASA tested a Rolex 6238, a Longines-Wittnauer 235T and an Omega Speedmaster 105.003. Hamilton sent a pocket watch and was disqualified. The Rolex failed the humidity and high-temperature tests and the Longines-Wittnauer failed high temperature when its crystal warped. Only the Speedmaster passed.
The 3861 is the better everyday watch: Master Chronometer certified, 15,000 gauss resistant, hacking, a 50-hour reserve, 42 mm, $7,800 to $9,000 at Omega US. The Calibre 321 is the collector’s choice: a column wheel, 55-hour reserve and 39.7 mm straight-lug case, at $17,300, without METAS or COSC certification.
At Omega US in October 2026 the Moonwatch Professional lists at $7,800 in Hesalite and $9,000 in sapphire, and the Calibre 321 in steel lists at $17,300. On 3 October 2026 Bob’s Watches asked $5,995 for a pre-owned 1861 Moonwatch and $6,995 for a pre-owned Hesalite 3861.
The Speedmaster Professional remains the only watch qualified by NASA and other agencies for spacewalks. It was requalified in 1978 for the Space Shuttle programme. The Speedmaster X-33 is NASA’s standard crew watch inside the station, but it is not rated for spacewalks, so the manual Moonwatch remains the EVA choice.
Final verdict
Most buyers should buy the Hesalite 3861 new. At $7,800 it is the closest current watch to Aldrin’s and it is Master Chronometer certified. Pay $1,200 more for sapphire only if you want the display back and scratch resistance. On a budget, a pre-owned 1861 at around $6,000 gives you the classic watch with an older movement.
Buy the Calibre 321 if you value the column wheel and the 39.7 mm proportions and accept paying over twice as much. Buy a vintage 145.022 or 145.012 only with an Extract of the Archives and a specialist’s eye. None is a mistake; the history is the same.
Related articles
- Omega Speedmaster Professional Moonwatch Buying Guide (2026)
- Omega Speedmaster ’57 Review (2026)
- Omega Speedmaster Dark Side of the Moon Review (2026)
- Omega Speedmaster Mark II Review
Sources: Omega archive and chronicle, NASA Apollo Lunar Surface Journal, Smithsonian National Air and Space Museum, Omega US price list, dealer asking prices from Bob’s Watches. Prices checked 3 October 2026.
