Original 2nd printing, 14x20" concert poster for Captain Beefhart and His Magic Band, Chocolate Watchband and The Great Pumpkin at the Fillmore Auditorium in San Francisco, CA on 10/28-30/1966. 
 
Art by Wes Wilson, image is #34 in the Bill Graham/Fillmore series. 
 
The poster is in excellent/nm condition.