Galerie Der Spiegel in Koln, made a 1968 a memorable publication with Victor Vasarely. Naissances is such a book you will cherish for a long time and find it with each viewing more interesting. The book contains one card whcih can be held behind the tranparent printed pages making each page a different kinetic work of art, plus the book contains two signed and numbered serigraphs which make it even more valuable. I tried to find another copy on the interenet, but it looks like i am the only bookseller who can offer this very special book now. It is not cheap… but i can assure you it is fascinating!