Original 1st printing 11 x 17&1/2" concert poster for Spirit appearing with the Elvin Bishop Group and Sha-Na-Na at the Boston Tea Party (15 Lansdowne Street location) in Boston, MA from 10/9-11/1969.

 Art by Eric Engstrom, medium-thick flat index stock poster is in excellent (B+) condition; a very subtle discoloration, a couple of tiny pin-prick spots and a touch of moisture wear along the bottom margin, a light amount of surface "chipping" in the lower right margin/corner, a trace of toning and a touch of surface smudging around where it says, "Sha-Na-Na", otherwise fine.

 AWESOME pop-art design on this one!!!