Una hora Zaj

Published by the artist, Madrid, 1970
Blue offset on white cardboard, 35 x 37 cm.
Signed on the back and unnumbered

A copy re-edited unsigned and unnumbered
in artist's book  "Zaj", No. FX0415

Bibl.: "Zaj". Exhibition catalogue, Museo Nacional Centro de Arte Reina Sofia, Madrid 1996, p.151