Original 1st printing 14 x 20" concert poster for Quicksilver Messenger Service at the University of San Francisco Gymnasium on 4/15/1967. Artist unknown, thin flat vellum stock poster is in fantastic near mint (A-/B+) condition; aside from a couple of scattered pinch dings and a couple of very minor small bends in the top right/bottom left corners, it's pretty much as sharp as you can ask for. Great-looking early QMS poster featuring a photo of the original 5-piece lineup of the band.