Avengers #56 CGC 9.4
Baron Zemo appears, story of how Captain America become encased in ice and how Bucky loses his arm, very undervalued issue in my opinion
Avengers #57 CGC 8.0
Classic cover! 1st appearance of the Vision! Avengers vs. the Vision cover and story by Roy Thomas and John Buscema, Black Widow and Ultron appear
Avengers #57 CGC 7.5
Classic cover! 1st appearance of the Vision! Avengers vs. the Vision cover and story by Roy Thomas and John Buscema, Black Widow and Ultron appear
Avengers #57 CGC 8.0
Classic cover! 1st appearance of the Vision! Avengers vs. the Vision cover and story by Roy Thomas and John Buscema, Black Widow and Ultron appear
Avengers #63 CGC 9.4
Goliath (Hank Pym/AntMan) becomes Yellowjacket! Hawkeye (Clint Barton) becomes the new Goliath!
Avengers #70 CGC 9.2
1st appearance of the Squadron Sinister! Avengers vs. the Squadron Sinister cover and story by Roy Thomas and Sal Buscema
Avengers #71 CGC 8.5
1st appearance of the Invaders! Avengers vs. the Invaders cover and story, white pages
Avengers #78 CGC 9.4
1st appearance of the Lethal Legion! Avengers cover and story
Avengers #80 CGC 9.4
1st appearance of Red Wolf, Avengers cover and story
Avengers #81 CGC 9.4
Avengers, Scarlet Witch and Vision cover and story by Roy Thomas and John Buscema
Avengers #83 CGC 7.0
Valkyrie, Black Widow, Medusa, and the Wasp against the Avengers, Enchantress appears, very likely upgrade candidate, maybe 8.0/8.5
Avengers #88 CGC 8.5
The Hulk cover and story! Avengers cover and story, white pages
Avengers #96 CGC 6.5
Neal Adams art! Avengers cover and story, Kree Skrull War story!
Avengers #96 CGC 9.4
Neal Adams cover and art! Avengers Kree-Skrull war cover and story by Roy Thomas and Neal Adams
Avengers #100 CGC 9.2
Barry Windsor Smith cover and art! Story features everyone who ever was an Avenger!
Avengers #101 CGC 9.4
Avengers (Captain America, Thor, Iron Man, Vision, Quicksilver, and Scarlet Witch) cover and story with Harlan Ellison script, white pages
Avengers #102 CGC 9.6
Avengers (Captain America, Thor, Iron Man, Vision, Quicksilver, and Scarlet Witch) vs. the Grim Reaper cover and story
Avengers #106 CGC 9.4
Avengers cover and story, 2nd appearance of Space Phantom, Grim Reaper appears
Avengers #110 CGC 9.4
Avengers and the X-Men vs. Magneto cover and story!
Avengers #117 CGC 9.4
White Pages! Avengers vs the Defenders cover and story! Loki and Dormammu appear
Avengers #123 CGC 9.4
1st cameo appearance of Star Stalker, Mantis and the Avengers cover and story
Avengers #137 CGC 9.6
Avengers cover and story, Moondragon, Beast, and Yellow Jacket appear, John Romita cover,
Avengers #154 CGC 9.6
1st appearance of Tyrak, Avengers vs Attuma, George Perez art, Jack Kirby cover