Omega debuted the Seamaster family – like this full-serviced 1966 Omega Seamaster Cosmic Ref. 135.017 mechanical dress watch here – in 1948 to celebrate the company’s Omega’s 100th anniversary loosely based upon designs made for the British Royal Navy near the end of World War II, and was, in essence, a “splash-proof” dress watch – it now holds the honor of the longest running model since Omega’s founding in 1848.
 
Omega’s design of the first Seamaster, the 300, drew influence from older waterproof watches worn on the wrists of the British military during WWII.  However, what would initially distinguish the first Seamaster from its other predecessor watches from Omega competitors was its rubber O-ring gasket, which separated the dive watch from other lead or shellac gaskets which were more susceptible to temperature changes.  Instead, Omega’s rubber gasket prevented any water infiltration in severe temperature changes ranging between -40° C to 50° C.
 
In the 1950s, Omega engineers were so confident of the Seamaster’s durability, they attached one to the outside of an aircraft and flew it over the North Pole in 1956. The Seamaster 300 performed so well, in fact, that Jacques Cousteau’s team used it during experimental dives in 1963 and beyond.
 
For the past 70+ years, Omega has produced a staggering array of Seamasters to suit a variety of needs; from solid gold dress watches to solid blocks of stainless steel used for dive watches, from soccer timers to world timers, the Seamaster has seen them all. While other watch companies have various families to cater to various customers, Omega’s Seamaster is unique in its versatility: at one point or another there has been a Seamaster for just about everyone.
 
This Omega comes on a vintage Japanese Maruman stainles-steel bracelet, and with nylon strap, springbar tool, and rugged travel case.