Original 1st printing 14 x 20" printer's test-proof (press-wipe) concert poster for Jefferson Airplane appearing with the Great Society (with Grace Slick) and Heavenly Blues Band at the Fillmore Auditorium in San Francisco, CA on 6/10-11/1966. Art by Wes Wilson, image is # 10 in the Bill Graham/Fillmore series. This particular example is a unique printer's test proof with a HIGHLY PSYCHEDELIC dual overprint of BG 9 and BG 11 on the reverse. Medium flat vellum stock proof is in very good to excellent (B/B+ to B+) condition; a few scattered pinholes around the outer margins, light to moderate handling wear and a couple of tiny tape pulls in the outer margins, otherwise fine. VERY cool and EARLY Bill Graham Wes Wilson oddball variant poster.