This issue is a variant of The Avengers (Marvel, 1963 series) #192 [Direct]. There exist further variants.
Direct Edition for this issue was actually printed with a barcode that was slashed out by the printer/publisher. Direct Edition also distinguishable by the diamond price box on the upper left of the cover.
According to David Michelinie in The Avengers #196 letters page, due to reference material becoming lost, staffers at Marvel redrew parts of this issue. This information added 2005 by Steven Tice. The character Joseph Conroy, a black man, was mistakenly colored as a white man.