As always I have to warn the unwary that this list is compiled with neither expert knowledge nor unusual intelligence, so you may not agree with any or all of it.
Number 10.
Vince Colletta's inks aren't ideal for John Buscema's pencils but The Avengers #45 shows you can never go wrong in having a giant figure menacing your heroes - even if it's only the somewhat uncharismatic Super-Adaptoid.
Number 9.
The Avengers #59 sees the first ever appearance of Henry Pym's millionth incarnation Yellowjacket. I would rate this higher, as I love the drama of it but, as I've said elsewhere, I've never been able to stand all that red. So, although the colouring's in no way shape or form John Buscema's fault, I've been forced to mark it lower than I otherwise would have.
Number 8.
In Avengers #56, Captain America's still fretting over the death of Bucky, to the extent that he uses Dr Doom's old time machine to find out just what happened on the fateful day he and his own Boy Wonder had their last adventure together. There's something about this cover that doesn't feel typically Buscema-esque to me but it shows off his gift for visually conveying emotional drama.
Number 7.
The Avengers #61 sees the Avengers and Dr Strange take on the twin threats of Ymir and Surtur. Maybe it's my imagination but, although it's credited to John Buscema, to me there've always seemed to be hints of Gene the Dean Colan in its portrayal of Surtur and Ymir.
Number 6.
Lashings of white, as The Avengers #58 has our heroes burst out of the cover at us. Buscema's strength was always drawing the human figure in elegant and dynamic poses, and he uses that gift beautifully here.
Number 5.
The Avengers #60 presents the big day as the Wondrous Wasp marries the not so wondrous Yellowjacket - but not if the Ringmaster's Circus of Crime have their way. You've got to love that snake. You've got to love those floating heads.
Number 4.
With The Avengers #54, Buscema uses three visual planes to show us the plight of the Avengers, the malice of the Masters of Evil and the would-be heroics of the Black Knight, without overcrowding the page.
Number 3.
The Avengers Annual #2 literally flings the evil original Avengers up against the then current line-up. The power, the passion. It's like Michelangelo all over again. You have to feel sorry for poor old T'Challa though. Frankly, I don't fancy his chances against the Hulk.
Number 2.
The Avengers #83, and a perennial Steve Does Comics favourite, as the male chauvinist pigs get a good bashing from the Valkyrie and the Lady Liberators. Aside from all else that's good about this cover, I have to love the way Buscema puts the Wasp right up front so we can see her.
Number 1.
What a way to introduce everyone's favourite synthezoid, as Avengers #57 sees the Vision makes his bow. Not that he looks here like he'd ever dream of bowing to anyone. With this kind of drama, could anyone be left in any doubt we're seeing the debut of a character who'll change Avengers' history forever?