Original 1st printing 13&7/8 x 20&1/8" concert poster for the Grateful Dead appearing with Quicksilver Messenger Service at the Avalon Ballroom in San Francisco, CA on 1/27-28/1967. Art by Stanley Mouse (who also SIGNED the poster in pencil) & Alton Kelley, image is # 45 in the Family Dog/Avalon series. Medium flat index stock poster is in spectacular mint/near mint to near mint (A/A- to A-) condition; aside from a couple of ultra-tiny dings and a slight wave to the paper, this is an absolutely GORGEOUS-looking 1st printing SIGNED example of this classic Mouse/Kelley Dead image.... apparently there's even a (disputed) tape of the show from the 27th; judge for yourself HERE:

 

http://www.archive.org/details/gd67-01-27.aud.hanno.16744.sbeok.shnf