Classic X-Men #3 has a Storm cover by Art Adams in a picture frame, 25th anniversary wrap-around cover format which was used on all titles in November of 1986.  The back covers of some of the anniversary books feature nice pinup drawings instead of the usual ads (this one is amazing).  These books have enjoyed boosted popularity and value due to the special nature of the covers.  This book is graded 9.6 NM+ with white pages by CGC.