Original 1st printing 9&1/2 x 12&1/4" concert mini-poster/oversized flyer for Quicksilver Messenger Service appearing with Loading Zone at the University of California in Davis on 6/2/1967. 

 Art by Jeff Quiros (after Leonardo Da Vinci), medium-thick flat index stock poster is in very good (B/B+) condition; there are tack/pin holes in all four corners, along with a 1" tear in the right center margin and a razor-thin horizontal crease running along the top margin, otherwise fine. 

 REALLY cool-looking psychedelic Mona Lisa image from this small college show by a pair of San Francisco favorites. This is only the second example I have seen of this poster.