I really dig unlicensed catalog play sets like this star fortresss. I'm sure that more than a few grandmothers were fooled into thinking this was a death star. I've never seen one but it looks to be entirely of laminated cardboard, I wonder how many survived?
Also as a Star Wars nerd, the concept of Yoda, Lando and Hoth Han teaming up against Vader, Fett, Bossk and a whole lot of Storm Troopers reminds me a lot of 1981.
Possible link of interest pertaining to the subject: 1978 Kenner Star Wars Catalog