Long ago, I saw these amazing pieces of original Super Joe concept art on Ebay, I regretted not putting a bid in and never got even proper shots of them for the site.
As luck would have it, the winner of the auction was none other than my pal John "Toyzilla" Marshall and he graciously offered to share them with the world.
These pieces appear to be drawn by comics legend Nick Cardy and depict Super Joe punching out what I can only guess is a rough concept of Gor: King of the Terrons.
Thanks again to John for this awesome share. Nothing like some newly discovered 70s joy.