Original 1st printing 23 x 17&1/2" concert poster for Emerson, Lake & Palmer appearing with Humble Pie at the San Antonio Municipal Auditorium in San Antonio, TX on 7/31/1971.

 Art by Bill Narum, medium-thick flat vellum stock poster is in decent/used (B/B- to B-) condition; there is a fairly heavy amount of corner/edge wear, including missing paper in the upper left corner tip, tack/staple/pin holes/pulls/creasing, a few light stains and tape remnants scattered around the outer margin area, several tiny pin-prick surface stains, thin stress bends and light handling dings hiding within the image area and a few stains on the reverse... definitely a well-traveled example. 

 Conditional issues aside, the image area still looks pretty decent. Weird-looking oddball Texas concert artifact from the early-'70's.