Original 1st printing 20 x 26" concert poster for the Grateful Dead appearing at the Zoo Amphitheatre in Oklahoma City, OK on 8/1/1982 (*Jerry Garcia's 40th birthday).
Design by Innervisions, medium-thick clay-coated/semi-gloss stock poster is in very good to excellent (B/B+ to B+) condition; there are staple holes in all four corners, along with a couple of very small handling bends and tiny stress creases scattered around the outer margin area, a slight amount of tightening to the enamel ink (most visible in the black pass of ink around "Zoo Amphitheatre"), a semi-soft diagonal bend in the left margin area, a stray pin-prick spot or two and a touch of residue along the bottom edge on the reverse side, otherwise fine. Overall it is probably one of the better-looking examples I have encountered.
Check out a fine-sounding recording (soundboard/audience matrix) of the show HERE;
https://archive.org/details/gd1982-08-01.124193.mtx.dusborne.flac16/gd82-08-01s1t02.flac