The thing about running a poster business is I spend all my time photographing the posters I have for sale but almost never take pics of those in my personal collection.
Here's a small selection from my non-movie poster collection. Strictly speaking, they are advertising posters but the Wall of Death might more properly belong in a carnival/circus collection and the Gayety sign in a burlesque collection, Anyway, there you are...my only criteria is that have to appeal to me graphically and that is it. Otherwise I am not too strict about what I add. So I guess it's more of an accumulation than a collection. Also, I pick them up at yard sales, auctions and flea markets, NEVER online (that's too easy).
Besides these, I also have tin signs and soda pop signs and posters. As I add more I'll post again.
http://www.facebook.com/album.php?aid=2029020&id=1475330596&l=415316be22