Calibre 351 — an early centre-seconds revision

In brief

Collectors meet the 351 as one of the earliest centre-seconds bumpers rather than as a design in its own right: a revision, running the 17 jewels and 19,800 vph shared across the 28.1 mm series.

Short history

It appears in 1949, at the start of the centre-seconds branch of the bumper family, during the same stretch in which Omega kept expanding its first generation of automatics.

Watches that used it

• Omega automatic watches of the late 1940s