Original 1st printing 13&1/2 x 22" concert poster and 14 x 22&1/4" reprint/bootleg poster for the Allman Brothers Band appearing with Boz Scaggs at the San Diego (CA) Sports Arena on 9/21/1973.

 Designer unknown/not credited (photo by Laure Vincent Bouleau, show promoted by Pacific Presentations), both posters are on a medium-thick smooth index stock (the boot is a tad thicker) and are in mint/near mint to near mint (A/A- to A-) condition; a VERY sharp set of ABB posters from the "Brothers & Sisters" tour.

 Aside from the obvious differences (colored paper, larger size and wide borders on the bootleg), there are a couple of smaller details (a dark horizontal line above Gregg and Butch, a touch of ink spray/pin-prick spotting in the ticket outlet area, a corrected spot on "Scaggs") which confirm that the image was indeed reprinted.

 This one took me YEARS to figure out, it wasn't until I was able to compare the two posters next to one another before I was able to pick out all of the differences. MYSTERY SOLVED.