GREEN HORNET #9, 1942. Gorgeous early cover done for Harvey Comics, with a nice "ugly mobster" type and an interesting composition.
AVENGERS, THE #12, 1965. Great looking Chic Stone inked cover of the team. I especially like the classic Kirby pose of Giant-Man's hand there.
CAPTAIN GLORY #1, 1993. From the "coulda been a contender" file, this illustration dates from the same time as the concept art that would evolve into the Fourth World characters, apparently at some point known as Captain Victory. The character remained unused, although his name did go on to bigger things in the 1980s. Finally, when Topps licenced some Kirby concepts in the 1990s for their shortlived "Kirbyverse" line, this great looking piece of art saw print, with some fine Ditko art inside.