Original 1st printing 11 x 17" concert poster for John Lee Hooker appearing at the Matrix in San Francisco, CA from 9/29-10/3/1970. 
 
 Art by Mark T. Behrens, medium flat stock poster is in decent (B/B-) condition; this example has staple holes in all four corners with a small chunk out of the bottom right corner tip, a tiny wedge and a couple of drag tears in the lower left corner tip, a a series of tiny pin-prick scuffs/spots and a stray soft stain or two lurking around the outer margin area, a pair of tack holes along the lower left border, a few tiny edge nips along the right margin and a small edge tear along the left margin, a few stray handling/stress bends hiding within the image area and a light amount of surface dirt, otherwise OK... it definitely looks like it was "liberated" from public display at the time of the shows.

A little on the rough side, but VERY scarce... this is the first one of these I have had pass through.