In Concert Original Vintage 1976 Black Light Poster 23 x 35. Out of Print and Rare Blacklight Poster from 1976! Size: “23 x 35″. Type: Vintage, Blacklight Poster. Publisher: Star City, Inc. The poster shows only minor border wear and a small tear on the left side. Please see photographs for details Handle with care. Poster is as photographed. Poster America logo not included.