Well, as I mentioned, I had only been reading Spidey Super Stories - my parents preferred those for me as a little kid because they were easier to read and didn’t have ads. It was my grandmother who, not knowing any better, let me pick out ASM #173. It was a perfect jumping on point and seem so epic at the time - Spidey gets shot, villain has some personality and reasonable motivation, intense battle ending with an apparent death - loved it all.
I saw the Andru art tracker - for what it’s worth, I can tell you where four of the pages from #173 are...😄