Series of postage stamps art designed by Nico Kok and released in 2010 during the relay exhibition "The underlying idea" of art in the Maria School in Heemskerk with the artists Kees Heesterbeek, Piet Vos, Nico Kok, Frits Klaver, Gerard Strik, Ewout van Santen and Mary Admiraal.
Seven stamps of each 30x40mm Edition: 50
By sale certificate of authenticity and edition number.