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 near mint (A-) condition; aside from a TINY thin crease in the lower left margin/corner, one or two nearly-invisible handling dings and a small smear of printer's ink on the reverse-side bottom margin, it is a VERY clean 1st printing example of this early 1967 Moscoso Avalon poster.