Original 1st printing 13&1/8 x 19" concert poster for Quicksilver Messenger Service appearing with the Other Half and the (Steve) Miller Blues Band at the Avalon Ballroom in San Francisco, CA from 1/6-7/1967.
Art by (and SIGNED in pencil by) Victor Moscoso, image is # 42 in the Family Dog/Avalon series.
Medium flat vellum stock poster is in SPARKLING near mint (A-) condition; aside from a nearly-invisible 1/2" tape residue mark in the lower right margin and a tiny handling ding or two, it is a GORGEOUS 1st printing example of this classic early-'67 Moscoso image from the Avalon with a nice large artist's signature.