Plexiglas,

1967

39.6 x 39.6 x 9.6 cm (15 5/8 x 15 5/8 x 3 3/4 in.)

with incised signature, title, date '1967', and numbering '36/100' on a clear plaque affixed to the reverse, published by Éditions Denise René, Paris, contained in the original wood crate.