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 Victor Moscoso, image is # 42 in the Family Dog/Avalon series.
 
 Medium flat vellum stock poster is in very good to excellent (B/B+ to B+) condition; there are tack holes with small ring indentations in all four corners, along with a couple of tiny edge/corner-tip creases and a nearly invisible soft horizontal/diagonal bend (mostly visible from the reverse) in the lower right margin, otherwise it is a VERY nice-looking 1st printing example of this early 1967 Moscoso Avalon poster.