Original 1st printing, 7x9 & 1/4" concert postercard/handbill/mailer for Iron Butterfly, John Mayall, Savoy Brown, Johnny Winter, Boz Skaggs, Elvin Bishop, Aum, Freddie King, Elvin Bishop, Black Oak Arkansas, Herbie Hancock at the Fillmore West in San Francisco, CA on 8/24-9/1 and 9/3-9/6/1970. 
 
Art by Alton Kelley, image is #247 in the Bill Graham/Fillmore series. 
 
The postcard is in vintage condition.  There is white residue on one border and very light edgewear.  Otherwise nice.