Superman: The Man of Steel #18 - Graded CGC 9.8 - White Pages - 1st Full Appearance of Doomsday
1st Full Appearance of Doomsday
When collecting Mainstream Comics Corps asks you to consider adding the following books to your collection. First Appearances, Number One (#1) Issues, Key Appearances, Variant Covers, Low Distribution Covers, Rare Books, and if you ever get to own one...a Scarce Book. The difference between Rare and Scare is the difference between Silver Age and Golden Age books.