Original 1st printing 13&7/8 x 19&3/4" concert poster for the (Amazing) Charlatans appearing with the Mystery Trend, Slaxon, "the Slight-of Head Magician" and Wanda & Her Birds (a trained bird act) at California Hall in San Francisco, CA on 4/16/1967. Art by Jack DeGovia, image is featured in the Art of Rock book on page 178 (plate 2.159). Medium flat index stock poster is in excellent to near mint (B+ to B+/A-) condition; aside from a couple of VERY well-camouflaged stress creases and soft bends (most of which aren't visible from the front), it's a really bright/crisp example of one of the stranger-looking Cal Hall posters. Classic psychedelia!