Original 1st printing 8&1/2 x 11" concert flyer for the Grateful Dead appearing at the Baltimore (MD) Civic Center on 5/26/1977.
Art by C. Regan/Grateful Graphics, thin flat stock flyer is in ULTRA-sharp mint/near mint to mint (A/A- to A-) condition; aside from a well-camouflaged pinch ding or two hiding within the image area, it is an absolutely SUPERB-looking example of a fairly low-run regional Dead flyer from the (extremely hot) Spring '77 tour.
Check out a great-sounding audience recording of the show HERE:
https://archive.org/details/gd77-05-26.sbd.sacks.3224.sbeok.shnf