Observación de los movimientos de una mosca sobre el cristal de una ventana desde las 8 de la mañana hasta las 7 de la tarde de un día de mayo de 1967

1. Card version, 1968
    Published by the artist, Madrid
    Colored offset on blue cardboard,
    printed on both side, 24 x 17 cm.
    Signed and unnumbered
  A copy re-edited unsigned and unnumbered
   in artist's book  "Zaj", No. FX0415

2. Cloth version, 1990,
    Published by F. Conz, Verona  No. PVC0267
    Silkscreen on cloth, 164 x 119 cm.
    Signed and numbered 27/33

3. Poster version, 1990
    Published by Edizioni Nuova Intrapresa, Milan, No. 1084E
    Color offset on paper, 70 x 50 cm.
    Numbered 066/500

Exh: Various centres, Gran Canaria 2004.



Bibl.: "Zaj". Exhibition catalogue, Museo Nacional Centro de Arte Reina Sofia, Madrid 1996, p.133 ; "Walter Marchetti. Música visible", exhibition catalogue, Spain 2004, pp.116-117 ; "Zaj. Colleción Archivio Conz", exhibition catalogue, Madrid 2009, p.151.