Fantastic Four, Vol. 1, Issue #52: The Black Panther!

First appearance Black Panther (T'Challa)

Graded by CGC: 4.5 Very Good +

Characters: The Thing (Benjamin J. Grimm), Mr. Fantastic (Reed Richards), Human Torch (Jonathan 'Johnny' Storm)

Creators: Stan Lee, Jack Kirby, Joe Sinnott

Published by Marvel Comics April 12, 1966