The Seamaster Cosmic was introduced in 1967 and was produced into the early/mid 1970s.
Lots of options on these, hand wind and automatic, no date/date/day-date, stainless steel and gold plated, lots of dial variations. Beware of refinished dials, especially black ones.
Not to be confused with the later Seamaster Cosmic 2000, which is a completely different and unrelated watch.
Actually the first vintage Omega I purchased a long time ago and I still have it.
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