Manufactured in the early 1940s, this is an Omega masterpiece featuring the renowned “30mm caliber,” housed in a rare 37mm oversized Big Calatrava-style case with a gray Roman numeral dial.
It is powered by Omega’s iconic 30mm caliber, one of the brand’s most celebrated manual-wind movements, widely used in many models from 1939 through the 1960s.
While most examples from this era measure around 35mm, this piece is a rare find with its oversized 37mm Big Calatrava-style case, making it particularly distinctive among 30mm caliber models.
The dial is a beautiful gray Roman numeral design that retains an Art Deco aesthetic. Its refined design and sophisticated color palette reflect the distinctive charm of Omega during this period, sharing stylistic elements with contemporary 33.3 chronograph models.












