ASM 109
I was 8 years old when this comic was released. (by the way, it was not released in June of 1972, so the title at the top of the page should be changed... June 1972 was the cover date, but comics arrived in the stores 2-3 months ahead of the cover date).
I replied to a question in the story (Marvel pretended to have forgotten when Spidey and Dr. Strange first met, and asked readers to write in to tell them) and received a No-Prize !