Original 1st printing 8&1/2 x 11" concert flyer for the Grateful Dead appearing with South Bay Experimental Flash and Alligator at the "New Old" Fillmore Auditorium in San Francisco, CA from 11/7-8/1969.
Art by Cab Covay, image is featured in the Art of Rock on page 350 (plate 4.57).
Medium-thick flat index stock flyer is in superb near mint (A- to A-/B+) condition; aside from a touch of surface wear, a nearly-invisible thin horizontal bend running along the top margin and a couple of ultra-light tape pulls on the reverse, it is just about as bright/crisp an example as you can hope to find.
This is one of only a couple of images from the short period in late 1969 when the Fillmore was booked by the Flamin' Groovies' management, check out a fine recording of the 11/8 show HERE:
https://archive.org/details/gd69-11-08.sbd.wise.82.sbeok.shnf