Original 1st printing 8&1/2 x 11" concert flyer for the Grateful Dead appearing with Osceola, Rhythm Dukes, Lightyear and Jef Jaisun (Phoenix) at the "New Old" Fillmore Auditorium in San Francisco, CA from 12/19-20/1969.
Art by Lightyear Studios, image is featured in the Art of Rock on page 350 (plate 4.58).
Medium-thick flat index stock flyer is in good/decent (B to B/B-) condition; there is a fairly pronounced horizontal crease/bend in the center of the image area, along with a series of handling creases, small surface stains a couple of tiny pulls in the margins (and a couple of fairly large pulls on the reverse), a hint of toning and a series of creases scattered around all four margins... definitely used, but not without a certain charm.
REALLY cool-looking late-'69 Grateful Dead flyer (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 great-sounding recording of the 12/20 show HERE:
https://archive.org/details/gd69-12-20.sbd.cotsman.6301.sbefail.shnf