Original 1st printing 15 x 21&5/8" concert poster for a pair of 1970 shows held at the Spectrum in Philadelphia, PA, featuring Jethro Tull (7/8) and Ten Years After (7/16).

 Designer unknown, extra-thick glossy coated index stock poster is in very good (B/B+) condition; there is a small 1" tape pull in the bottom center margin, along with a series of light surface spots, stray fingerprints and tiny thin surface scratches scattered around the image area, a thin vertical stress bend along the left margin, a quartet of tape residue marks on the reverse and a single tack hole in the top center margin, otherwise fine.

 Cool-looking low-run 1970 Spectrum poster with a great photo of TYA lead guitarist Alvin Lee (taken from the "Cricklewood Green" poster insert).