Stainless steel-covered wood.

circa 1970

Closed: 45 x 59.5 x 59.5 cm (17 3/4 x 23 3/8 x 23 3/8 in.)
Fully extended: 45 x 142.5 x 142.5 cm (17 3/4 x 56 1/8 x 56 1/8 in.)

Together with a certificate of authenticity from the Archivio Gabriella Crespi.