Original 1st printing 18&7/8 x 12" boxing-style concert flyer for the Allman Brothers Band (with Duane Allman and Berry Oakley) appearing with Cowboy at the Jacksonville Coliseum in Jacksonville, FL on 4/11/1971. 

 Designer/printer unknown/not credited (show promoted by Jet Set Enterprises), thin flat stock letterpress flyer is in decent (B/B-) condition; there is a flattened horizontal center crease, along with a 1" vertical tear in the bottom center margin, a bit of light handling wear/creasing and an extensive amount of ballpoint pen writing on the reverse with a couple of tiny areas of ink bleed-through (see photo), otherwise OK.

 Conditional issues aside, this is the ONLY example of this ABB flyer that I have EVER seen.