Original first Printing, 13&3/4 x 22"" concert poster for Elvin Bishop, Elvin Bishop, Tower of Power, and Pacific Gas & Electric at Pepperland in San Rafael, Ca on 2/5-6/1971.
 
Art by Mark Behrens
 
The poster is in used vintage condition.  The right corner is torn off.  It has multiple creases and tears throughout.  There are a few pieces of tape on the back holding tears together; and one corner has a small moisture stain.  Sure is rare, though.