Look what I just found: my very first Avengers comic! This is issue 13 of the UK edition of The Avengers, reprinted from #16 of the US edition of The Avengers: Marvel UK had reprinted The Avengers’ first couple of issues in Mighty World of Marvel, so they skipped those issues when they gave the team their own title.
I recall removing the cover so that I could cut out the characters: The Avengers was the first of the Marvel UK titles to have glossy covers, which I thought was astonishingly cool. It seems that I decided to make up for the loss of the cover by colouring in Giant Man and Iron Man on the splash-page and writing #13 in the top-right corner. Didn’t fool anyone, I suspect, but given that the cover date is December 15, 1973, I think I did a pretty good job for someone who was only 7¾ years old!
For comparison, here’s the original coloured (sorry: “colored”) version from the US edition… Interesting to note that someone has expanded the artwork at the sides and bottom: you can clearly see where the new stuff doesn’t quite match the original.
Above: I pasted the US version over the UK version to illustrate how much was added… It could be that the US splash page was cropped from the Kirby/Ayers artwork, and the original was used for the reprint, but that seems unlikely given that the lettering is identical.
For what it’s worth, here are the US and UK covers side-by-side (the Marvel UK reprints usually just used the US covers – suitably adjusted – but occasionally completely new covers were supplied).