Standard

Speedmaster Mark 4.5 176.0012 — Standard

Undated

Shown in catalogues from 1976 only on a bracelet.

The Mark 4.5 on its steel bracelet: Mark IV-style cushion case, black dial with the caliber 1045 layout (central chronograph minutes and seconds, day and date window at three, 24-hour sub-dial at twelve), “Speedmaster Automatic” text and no “Mark” on the dial. · Photo: Antiquorum · © Antiquorum, used with permission · Source: https://catalog.antiquorum.swiss/en/lots/omega-ref-176-0012-speedmaster-automatic-chronometer-seamaster-lot-356-74

Identifying details

Date
Date display.

Variants of 176.0012

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Variant	Production
StandardCurrent	Undated

Case & movement

Reference: 176.0012
Production: Undated
Case material: Stainless steel
Case diameter: 41 mm
Water resistance: 60 m
Crystal: Mineral
Movement: Automatic
Date: Yes

More specifications (1)

Caliber

Movement

Omega 1045

Omega’s version of the Lemania 5100: central chronograph seconds and minutes, day, date and 24-hour indicator. Used in the Mark 4.5, Mark V and the 1987 “Holy Grail”.

Automatic · Introduced 1974

Omega Speedmaster Professional Mark IVRead more at Fratello (opens in a new tab)

Speedmaster Mark 4.5 176.0012 — Standard

Identifying details

Variants of 176.0012

Case & movement

Movement

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Speedmaster Mark 4.5 176.0012 — Standard

Identifying details

Variants of 176.0012

Case & movement

Movement

Read more

Dial, bezel & hands