I've got the misprint shaped picture disc for Fear of the Dark. Apparently the whole run was wrong so it's not as rare as you'd think.
IIRC the B side is supposed to be Hooks in You, but is actually Tailgunner, which IMHO is a better song anyway so nothing lost there!
I've also got Running Free: The Iron Maiden Story by Garry Bushell, but you'll have to prise that out of my cold dead hands.