Mathias Goeritz, xyz, 1966. 194 x 92 mm. A unique typestract blue on opaque paper, folded four times. Signed by the artist in pencil.
Goeritz sent this folded typestract to the British artist Kenelm Cox as a gift in 1966. The brief correspondence between the two artists is held in the Tate Archive. Cox curated the Arlington Une Concrete Poetry exhibition of 1966.