Original 1st printing 14 x 20&1/8" 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 (and SIGNED in pencil 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 very good to excellent (B/B+ to B+) condition; there is a hairline-thin 4" diagonal bend in the upper left corner, along with staple holes in the upper right margin/corner and lower left/right corners, a series of thin handling bends/light creases going around the outer margin area, a few thin stress bends hiding within the image area and a couple of corner-tip creases, otherwise fine.

 An EYEBALL-SEARING ARTIST-SIGNED example of this somewhat hard-to-find Moscoso/Neon Rose poster.