First Avengers ish that I bought off the rack. From the terrific Barry Smith art, including the opening splash page of the Black Knight aboard an airborne Aragorn, to the Roy Thomas story line involving every hero who was ever an Avenger (and his pointed statement about the space program being reduced to 'games of gratuitous golf'), I was hooked. Still am.
As a kid, I didn't get Smith's work on these later issues. I was puzzled by it. It looked weird and completely foreign from his stuff in #66-67. And boy was I fascinated by the art in those earlier books! I stared at and studied the illustrations for hours. Even went as far as copying the work in my own attempts at trying to draw the Marvel way.
I get it now. I understand the reason for the earlier Smith work looking the way it does. And I've come to appreciate the later stuff in his style. But issues #66-67 remain special. Always have, always will.
Since you mentioned it. A visual splash from #100...