2003, Pfeffermann - variations
book with 36 films in plastic cover
DIN A5 book, unique, DIN A4 book, edition: 3
By turning over individual films it is possible to create squares with each of the 64 initial colors (numbers respectively). The 36 films show 6 grids in 6 color values. 720 permutations of the square can be achieved by substituting individual films.