A very rare cardboard boxing-style concert poster advertising December, 1969 shows by the Charles Mingus Quintet, Sun Ra and his Intergalactic Research Arkestra, Freddie Hubbard Quintet, Elvin Jones Trio, and January 1970 shows by the  Pharoah Sanders Quintet, at legendary New York City jazz club Slugs.  Printed by Murray Poster Printing, this measures 14″ x 22″ and is in excellent condition.  The original owner wrote “1969” at the top left, and there is a diagonal scratch in the lower right corner.  Extremely rare and an amazing lineup of artists in their prime.