beyond rare. I know this is extra rare.this was a big day at the kiel auditorium in St. Louis Mo . janis joplin and big brother are headlining 8 bands for an all day concert. the hour glass with gregg and duane allman are invited to play. iron butterfly is going to sell more albums than the beatles in the next year. the allman brothers band will form in less than a year.out of dougs allman cave. ships to lower 48 states only.this item comes framed. it has 2 small rips and a crease fold near upper right corner.This is a rare poster that almost never comes for sale, enjoy .doug mckee owner and curator of and allman acts museum.the hour glass was bill grahams and doug mckees favorite band. it is very possible that less than 5 of these exist.