12 Rotoreliefs by Marcel Duchamp

12 Rotoreliefs by Marcel Duchamp. The optical disks are in the original black cardboard holder. The circular holder is inserted into a folded cardboard band which also serves as a stand for use when spinning the discus on a record player turnstile. Appearing on the band is a photograph of a turnstile with stand in place, together with instructions, in English, which are subscribed by Duchamp's facsimile autograph signature. (Bertram Rota Inventory 1974, Pg. 46)

"These discs, turning at an approximate speed of 33 revolutions per minute, will give an impression of depth..."