This 1966 Omega Seamaster 600 presents a restrained, mid‑century wristwatch aesthetic with a black dial and the clear provenance of reference 135011. Its design emphasizes clean lines and legibility, reflecting the practical elegance of the era. Under the case sits Omega’s Cal. 601, a manually wound movement known for dependable daily performance and straightforward long‑term serviceability. Recently serviced and supplied with documentation, this Seamaster balances historical character with ready‑to‑wear reliability, offering collectors a well‑resolved example of Swiss watchmaking from the mid‑1960s.