suggestions on what jim steranko book get signed?

i have been saving up for awhile and should have enough to get any of his books in VF or higher to get signed. i know Jim steranko is a big name and i know he is most known for nick fury and captian america

but he also did 2 x-men(my favorite) so which sould i get signed for my collection? any responces are appreciated as long as there suppotive(i know some people believe signitures ruin comics)

i geuss since my interest in comics only started 3 years ago i have a lot of questions that arnt answered

can someone please say somthing? haha i never get any responces on my topics it would be nice to just once

(the only forum that did well was x-men vs. JLA)