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Why this watch.

1950 Omega Semaster Automatic Bumper

This Omega Semaster from 1950 presents the restrained lines and mid‑century proportions typical of early post‑war wristwatches. The case and dial balance a period aesthetic with everyday legibility, while the movement is the hallmark of its era: an Omega Cal. 351 with a bumper automatic winding system. That combination speaks to a time when technical innovation and refined finishing were both central to watchmaking. For a contemporary collector, the piece offers a direct mechanical link to Omega’s mid‑century production and the tactile experience of a bumper rotor movement.

Watch dossier

Important details, without the clutter.

01Specifications
Brand / model
Omega Omega Semaster Ref. 2577-6
Reference
2577-6
Estimated production
Vintage 1950
Movement
Automatic Bumper
Caliber
Cal. 351
02Service & provenance

The watch has been technically and visually inspected. It did not require servicing and is ready to wear.

03Delivery & returns

Current store policies apply to this purchase.

Shipping policy · Return policy

Included with the watch

Everything supplied with this example.

01

EVW travel box

02

Store invoice