Speedmaster
CK 2915 · Cal. 321The origin of the line, with Broad Arrow hands and a steel bezel.
Models
One family. Many characters.
This selection presents key stages in the Speedmaster's development. Every reference has its variations and its own history.
1957 and onwards
It begins with the CK 2915.
Early Speedmasters are collectors' pieces in which authenticity and technical function matter equally.
The model's history begins in 1957 with the CK 2915 and calibre 321. The CK 2998 and ST 105.003 retain the symmetrical case with straight lugs. The ST 105.003 passed NASA qualification in 1965. In parallel, the ST 105.012 was delivered from 1964 with an asymmetrical case protecting the crown and pushers. Original hands, luminous material, dials and bezels shape the character of these early watches.
How we treat original material
Professional & Moonwatch
The familiar silhouette.
From the early column-wheel calibre to the current movement: the design remains recognisable, while the technical construction changes.
Speedmaster
CK 2998 / ST 105.003 · Cal. 321Early versions with distinctive case and dial details.
Moonwatch with calibre 321
ST 105.012 / ST 145.012 · Cal. 321Asymmetrical case protecting the crown and pushers, with the column-wheel calibre 321. “Professional” appeared on the dial in 1964 – before NASA qualification in 1965.
Moonwatch
ST 145.022 · Cal. 8613570.50.00 · Cal. 1861
The ST 145.022 introduced the cam-controlled calibre 861 in 1968. The rhodium-plated calibre 1861 followed from 1997, closely related technically to the late 861.
Moonwatch
310.30.42.50.01.001 · Cal. 3861The standard-production Professional offered since 2021, with calibre 3861, a Co-Axial escapement and Master Chronometer certification; this reference has a Hesalite crystal.
Speedmaster Calibre 321
311.30.40.30.01.001 · Cal. 321A modern steel version with the reintroduced column-wheel calibre 321, inspired by the symmetrical ST 105.003.
Further Professional variants
Display case backs and moon phases.
The classic manually wound line also includes decorated movement variants and additional displays. Automatic Speedmasters and the Mark series form separate branches alongside it.
Professional with a visible movement
Calibres 863 / 1863Decorated variants of the 861/1861 family. The first Speedmaster with a display case back appeared in gold in 1980; the steel version followed in 1985.
Professional with a calendar
Calibres 866 / 1866Manually wound chronographs with moon-phase and date displays. Here too, the movement, case reference and dial belong together.
Collectors' details
The reference is the starting point.
A model name alone does not describe a complete watch. With historic Speedmasters, we consider the components together so that technical repair and originality remain consistent.
Check the movement and case together
We assess the movement number, case reference and configuration together. The year stamped inside the case back is not automatically the production year of the complete watch.
Dial, hands and bezel
Lettering, logos, hand shapes, luminous material and bezel details vary with the version. The colour of luminous material alone does not prove originality.
Consider transitions and service parts
Old and new component versions were sometimes used in parallel; service parts were added during later servicing. A difference must therefore be assessed against the particular reference.
Mark series
A spirit of experimentation on the wrist.
The Mark models are more than a footnote to the Moonwatch. Their case shapes and calibres present their own requirements for servicing and restoration.
Mark II: line, colour, form.
The tonneau case and the scale beneath the crystal give the Mark II a distinctive presence. In the Racing version, the coloured accents are part of that identity – and deserve particular attention during work on the exterior.
View original photographsMark II
ST 145.014 · Cal. 861Tonneau case; shown here in the Racing version.
Mark III
ST 176.002 · Cal. 1040A striking design among the early automatic chronographs.
Mark IV
ST 176.0009 · Cal. 1040A distinctive continuation of the automatic Mark series.
Mark “4.5”
ST 176.0012 · Cal. 1045Listed by OMEGA as the Mark IV; collectors call the later version the “Mark 4.5”.
Mark V
ST 376.0806 · Cal. 1045The later Mark generation with its own distinctive design.
Speedmaster 125
ST 378.0801 · Cal. 1041The striking automatic Speedmaster; its case number is 178.0002.
These references are examples, not a complete list of variants. We establish the exact identification from the watch, case and movement. OMEGA lists the 176.0012 as the Mark IV; “Mark 4.5” is the familiar collectors' name.
More Speedmasters
Unusual models are welcome too.
The Reduced, Speedmaster 125, Speedmaster ’57, special editions and other variants belong to the family. We assess every mechanical Speedmaster individually and establish which service is technically possible and appropriate.
The condition of the individual watch matters more than its model name – especially with early watches whose parts are difficult to replace.
