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Omega Speedmaster Reduced 3510.50 Caliber 1140 · The Index

Caliber 1140

Speedmaster Reduced 3510.50 — Caliber 1140

Undated

Early Reduced with caliber 1140.

Early Speedmaster Reduced on a brown strap: 39 mm case, black dial with “Automatic” text, tritium markers and hands, three sub-dials and a black tachymetre bezel. The lot gives caliber 1140 and the case reference 175.0032. · Photo: Antiquorum · © Antiquorum, used with permission · Source: https://catalog.antiquorum.swiss/en/lots/omega-ref-175-0032-speedmaster-reduced-lot-379-68

Identifying details

No named details recorded yet.

Variants of 3510.50

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Variant	Production
Caliber 1140Current	Undated
Caliber 3220	Undated

Case & movement

Reference: 3510.50
Production: Undated
Case material: Stainless steel
Case diameter: 39 mm
Movement: Automatic
Caliber: Omega 1140

Dial, bezel & hands

Unknown attributes are left out rather than guessed.

Movement

Omega 1140

ETA 2890-A2 base with a Dubois-Dépraz 2020 chronograph module; the first movement of the Speedmaster Reduced. Later replaced by the 3220.

Automatic · 46 jewels

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