Original 1st printing 15 x 21&5/8" concert poster for Jethro Tull appearing on 7/8/1970 and Ten Years After appearing on 7/16/1970, both shows held at the Spectrum in Philadelphia, PA.

 Designer unknown, extra-thick glossy coated index stock poster is in used (B-) condition; numerous surface stains (including small amounts of india ink bleed from the reverse at the top center of Alvin's head, to the left of his eye and partially on the word bubble), along with numerous tiny dings, thin hairline stress creases, fingerprints, an area of rubbing/abrasion (about the size of a quarter) in the ticket outlet area, a tack hole at the top center, a tiny edge tear or two and the reverse is entirely covered with pen/ink/pencil scribbles/doodles with a decent-sized moisture stain in the lower left corner (see photo), otherwise fine.

 Conditional issues aside, it is still a pretty cool low-run regional piece that doesn't turn up often.