Omega Speedmaster — Chronograph Wristwatch

Also known as: Speedmaster Professional

DocumentedSupported by at least one credible specialist source.

Period

1957 onwards

Issuing entity

Switzerland

Maker / issuer

Omega

Manual-winding chronograph wristwatch line introduced in 1957, later associated with NASA crewed spaceflight.

Historical context

Introduced as a sports and racing chronograph with a tachymeter scale on the bezel. From the mid-1960s the model was used by NASA astronauts, which shaped both later production and the collector market.

Physical characteristics

Case material: Stainless steel on the principal references

Technical characteristics

Movement: Manual-winding chronograph calibres across the line
Complication: Chronograph with tachymeter scale

Design

Dial: Black dial with three sub-registers on the classic references
Bezel: Tachymeter scale

Identification

Warning: This line is heavily counterfeited and frequently assembled from mixed parts
Key diagnostics: Reference number, calibre and case-back markings together identify the variant

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.

Varieties

Reference families
Individual references require separate verified entries; not yet created.

Research required

Per-reference production dates and calibre assignments pending verification from manufacturer archive records.

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