I have a "politipo" identic to the one you show here. It is not a multiple; it has a labelPROVA/PROT (without any number) 1969, signed from the artist. The direction of the plastic lists is from left to right, not from right to left as yours. Dimension 58 x58. I know that there is also a multiple similar from Dino Gavina Edition 1966 , dim 60x60, ed. 100 but also this one has the lists from right to the left. Could you give me some other information about these works? Thanks and regards.

Sorry, I add also some other: the photo oh your work is published in the book you indicate at page 340.