When I was learning to draw, I copied lots of things from my favorite comic book artists. From, Wallace Wood, the main things I took were his facial shadows and his spacesuits. Here, from the previously mentioned 1979 Overstreet with its Wood cover, is a fairly typical late period Wood spaceman. The bubble helmet, the oxygen tanks, the ridges along the arms and legs and the shadowed face. Yep, I copied 'em all when I drew spaceman! Still do!
No idea what this was originally from although it looks to be contemporary to the late seventies based on the use of those certain types of paste-on screens in the background. A portfolio piece perhaps?