The 1st printing poster was printed by West Coast Lithograph before the concert. These original posters have a dark "droplet" mark in the "P" of April, above the word Fillmore. The 1st printings have less than 1/8" of black border at the upper left side where the Byrds lettering bulges out of the orange border. It measures 13 3/4" x 22 1/4".
The 2nd printing was produced by Creative Lithograph after the concert sometime between 4/15/1967 and 5/31/1967. In this reprint, the "droplet" on the "P" of April is gone, and the black border to the left of the Byrds lettering is larger, measuring 3/16". The West Coast credit is still printed on the lower left hand border. These post-concert reprints measure 13 7/8" x 22 3/16".
The 3rd printing is on glossy cover stock and bears a Wolfgang's Vault notation in the lower right hand margin (not our watermark as seen in the image). It was printed in 2013 by the Bill Graham Archives LLC in a 500 copy run and is larger than the other printings, measuring 22 3/8" x 36".