The pair of zinc sheet multiples, one covered in sulphur and with gauze.

1970

both 64 x 31 x 18 cm (25 1/4 x 12 1/4 x 7 1/8 in.)

Signed and numbered 180/200 in pencil on the reverse of one part, both with the artist's Hauptstrom inkstamp on the reverse (only 150 of the edition of 200 were completed), published by Edition Tangente, Heidelberg.