I just came across this Star Wars Weekly B&W pin-up by Tony DeZuniga and just had to share it here.
It reminds me a lot of the cover of SW #2, only here Han & Chewie is involved in the fight. Plus, all the aliens are completely original creations. (Source)
(I know this is quite a stretch, but some of these aliens, especially the guy with the knife at the bottom right corner, reminds me a lot of the wacky Hungarian poster for ANH.)