I found this image in an old Action Figure Digest magazine. It is a conceptual mockup for the Flashback series, but titled "Classic Edition". It features the 1995 sculpt Luke with long saber. This version of Luke wasn't available in this series. I would love to track down this gem!
This unused "Classic Edition" card design can also be found on lower right corner of this proof card/sheet featuring a very generic Hasbro logo.
That is very cool. Interesting they used that Luke for this considering they abandoned that sculpt pretty quickly.