QUICKSILVER MESSENGER SERVICE Avalon Ballroom, SF Concert Poster (Superb original 1968 US 20'' by 14'' promotional concert poster, a one and only print advertising the gigs at the Avalon Ballroom in Sutter and Van Ness, San Francisco with supportfrom Sons of Champlin and Initial Shock performed on the 28th-30th of November, 1967. The poster displays a striking front, left and right portrait 'morphed' gestalt head image of the band as one entity in black and white,designed by Steve Rahn - ideal for framing)