Official (promoter-issued) 2nd printing 14 x 20" concert poster for Quicksilver Messenger Service appearing with the (Steve) Miller Blues Band and John Lee Hooker at the Avalon Ballroom in San Francisco, CA from 3/22-23/1967.
 
 Art by Victor Moscoso, image ("From the Plains of Quicksilver") is # 53 in the Family Dog/Avalon series.
 
Medium flat index stock poster is in near mint to excellent (A- to A-/B+) condition; really nothing more than a soft handling ding or two hiding within the image area and a tiny edge/corner-tip ding or two lurking around the outer edges, otherwise it is a SPECTACULAR example of this ultra-psychedelic Moscoso image from the Avalon.