The wall of silkscreened posters is coming together here at The Skullz Press. I found a few prints of some really old posters that I have extra copies of. I've also got lots of the "Mike Davis/Mike Giant" collaborative poster and the brand new "La Mission" poster. Every poster on the wall is $60 cash out the door. I'll even throw it in a tube for you.
If you live outside of SF, I can send you one. E-mail me for more info.