Fellow Speculators - A Guardians of the Galaxy movie is in development. This would make Marvel Super-Heroes #18 (Jan. 1969) a KEY issue "IF"
the movie source material is indeed the 1960's team.
If not, we're looking at the Guardians of the Galaxy (vol. 2) #1 (May 2008) being the key book. Since Thanos will play a big role in the Marvel Universe on screen, my guess is it will be the 2nd 2008 book material they pull from
. This 2nd book is an undervalued gem right now & can be picked up cheap! Don't say I didn't tell ya! Pick these up and keep an eye out for them, good to stock up a few.
Cover A of issue #1