Original 1st printing 14 x 20" concert poster for Big Brother & the Holding Company (featuring Janis Joplin) appearing at the Matrix in San Francisco, CA from 1/31-2/5/1967.

 Art by Victor Moscoso, image is # 4 in the Neon Rose series.

 Medium flat index stock poster (OP-1 in Eric King's book) is in absolutely stunning near mint (A-) condition; just a whisper of corner/edge wear (a stray handling ding or two and a couple of tiny bends in the corner tips), otherwise this is an absolutely STUNNING example of one of Moscoso's most retina-searing Neon Rose images.