Up for sale is one of the rarest and earliest Marvel Silver Age super hero introductions: Tales to Astonish #27. At the time of its publication in January 1962, this anthology series wasn't even a super hero series (it was horror / sci-fi). So yes, this very first appearance of Ant-Man in this Tales to Astonish #27 came well before X-Men #1, Avengers #1, Amazing Spider-Man #1, etc. After a seven issue gap, Ant-Man reappears in Tales to Astonish #35, after which he and, eventually, Hulk, take over the series until its end at #101 (where it then converts to The Incredible Hulk at issue #102).
This copy is an affordable (relatively, of course) but solid CGC 3.0 with nice page quality (Off-White to White). The item "Tales to Astonish #27 CGC 3.0 Marvel 1962 Huge Key FIRST App of Ant-Man" is in sale since Sunday, June 16, 2019. This item is in the category "Collectibles\Comics\Silver Age (1956-69)\Superhero\Other Silver Age Superheroes". The seller is "mattnathan69" and is located in Littleton, Colorado.
This item can be shipped to United States.