The 1st printing A poster is identified by its pure yellow background and blue inking. The word "Love" is in white, and although there is some inking variation throughout this run, presumably as a result of the "Monday/Friday phenomenon" all posters displaying a yellow background are considered 1st printing A posters. It was printed before the concert and measures 14" x 23 1/2".
1st printing B (see BG040-1B) displays a light olive green background and blue inking. The word "Love" is in white also, and again there is some variation in terms of ink colors, but these pre-concert posters displaying the olive green background are considered 1st printing B's. It measures 13 15/16" x 23 5/8".
The 2nd printing (see BG040-1B) is of the same olive green background, but this reprint displays the word "Love" in the same green background color instead of the white of the previous printings. Again, there is some inking variation throughout this run. This post-concert reprint was printed on smooth, random patterned stock and measures 14 1/16" x 23 9/16".
The 3rd printing (see BG040-1B) reverts back to the white "Love" variety, and displays a bright chartreuse background. This 1967 reprint retains the "West Coast Lithograph Co., SF" credit of the previous printings in the bottom right hand corner, so the chartreuse color is the primary means of identifying it as a 3rd printing. It measures 14 1/16" x 23 9/16".