On this printing the 1 1/4" long line above the "m" in "Auditorium" is very irregular, zigzagging back and forth from left to right as it goes from the top of the "M" to the top of the poster.This concert actually took place in between BG-003 and BG-004.
There are two printings of BG-000 done on different printing plates. Both are original printings. These were both printed before the concerts took place.
