The “Twilight Zone” was without a doubt the most popular of the sci-fi shows of the 60s. A close second and very well received was the “Outer Limits,” which ran on ABC from 1963-1965. The Marketts version of the “Outer Limits” theme was the bigger hit but worth only up to $25.00. Another version was by the Centuries. It wasn’t a hit, but it’s worth much more. Released by Cleopatra records in 1963, a red vinyl copy can get you up to $175.00 today.