This poster was reprinted roughly 12 months after these shows took place.  Printing records indicate that the second print run was 1000 posters (5000 were printed in the first run, before the shows).  On the original poster, there is a small white dot, about 1/16" in diameter, that can be found 2 3/4" from the right edge, level with the "t" in "litho".  The reprint poster does not have this dot, and the overall colors are somewhat darker than the original..