Lower text is from the splash page for this issue.
INSIDE FRONT COVER
Inside front cover: Top: John Byrne and Al Milgrom illustration for Doctor Strange Classics #1. Lower left: Doctor Strange illustration from the box of the TSR Marvel Super Hero Role Playing Game Marvel Miniature Set #2 (artist unknown). Lower right: Bruce Timm illustration.
INSIDE BACK COVER
Inside back cover: Carl Potts pin-up from Doctor Strange Classics #1.
I always use the original back cover on the customs.