#55, found it in my uncle's attic when I was a kid. It's what turned me on to the Avengers. My mother spilled coffee on it though in 1976
It's an excellent arc/issue, with rarely-bettered Buscema art.
I was just a kid then, bought the isses at 7-11 in Miami, and loved this match between the Avengers and the MOE. Those were the REAL Avengers to me, and that MOE Was only equalled by Stern's. The Melter became my demi-god, and the rest, especially Whirwind in his cool costume, almost as much.