To the right of the UPC symbol there is a circular balloon that has been blacked out. This circle originally contained the words ".. Featuring a Far-Out New Avengers Line-Up!". It was blacked out on the cover to push the promotion of a new Avengers line-up into the next issue. The original cover without the circle being blacked out was in the 1977 Avengers Style Guide from Marvel.
Romita either inked the cover or altered several figures, including Thor and Captain America. Adkins inking is also a possibility. Info per Nick Caputo, January 2018. Original indexer credited Mike Esposito.
Pages 7 to 18 are a reprint and constitute a flashback.
This is the last issue of The Avengers with Steve Englehart as the writer.
The Iron Man Armor MK V makes its' first appearance in this issue.