Pricing Question on Boxing advertising Piece
 

Any Idea what this Billy Soose Granger cardboard advertising piece would be worth.
I saw one at a local antique mall.
Didn't even look at the price it was locked in a case with no price showing.
Just checking as a possible pick up, but it's probally way over priced.
http://imageevent.com/ruckers/cardsf...=0&w=4&s=0&z=2

Billy Soose is not very popular but it's a neat piece. Don't think I've seen it before.

What's the approximate size?

It's approx. 14" x 18"