Cage, John. (1912–1992) Signed Gershwin Postal CoverSigned postal cover from the composer who experimented with the nature of sound and devised new systems of musical notation. His innovative ideas on composition and performance influenced musicians, painters, and choreographers. First day cover with the George Gershwin commemorative stamp and a metallic cachet, signed by Cage. An interesting and unusual association. Together with a humorous caricature print by David Levine.