Marvel Comics © June 1968, Fantastic Four #75.  The story is "Worlds  Within Worlds!".  Reed, Ben, and Johnny battle their dopplegangers, created by Galactus, who is determined to learn the location of the Silver Surfer.

Characters: Fantastic Four [Mr. Fantastic; Human Torch [Johnny Storm]; the Thing; Invisible Girl];  Galactus; Silver Surfer; Crystal

With works by:   Script: Stan Lee; Jack Kirby (co-plot)     Pencil: Jack Kirby     Inks: Joe Sinnott

This book appears  (f 58), w/ the expected nics, tics, wear and tear. Thanks for looking.     5571-8705-58