This poster is also known as Neon Rose #2 (NR-2).
The 1st printing poster is identified by the presence of a magenta overprint on the blue ink to the left of the extension from the top of the headband. The result is uneven color in the lavender band 1/4" to the left of the extension. "(c) 1967 Neon Rose" is credited at the bottom left of the poster. It measures 14" x 20" and was printed before the concert.
The 1st printing A poster (see MTX670110-A) is identified by a black "Returns FEB.21 FEB. 26" stamp near the bottom center. This pre-concert variant measures 14 1/16" x 19 15/16".
The 1st printing B (see MTX670110-B) poster is characterized by a "minors WELCOME" stamp on the bottom center of the poster. It measures 14 1/16" x 19 15/16" and was also printed before the concert.
The 2nd printing poster mimics the original 1st printing, with no stamping, but on this reprint the color in the band to the left of the extension is even. It was printed after the concert and measures 14 1/16" x 19 15/16".
The 3rd printing was also printed after the concert, but this poster credits "Neon Rose #2" in the bottom left corner. It measures 14 1/8" x 19 13/16".