UNDISCOVERED CONCERT POSTERS SPECIAL CONCERT DESIGN POSTERS Very rare poster from two concerts in Detroit from the Isolar 1 tour area in 1976. This big poster is uncut and holds two posters and five small handbills. Total size is approx. 24″ x 33 “inches. Bowie gave two concerts during his Isolar 1 tour in Detroit. Poster left is approx. 12″ x 24″ inches and is designed by Morris Brals.