Current Dutch coins are
5 Cent Stuiver.
10 Cent Dubbeltje.The Dutch `dubbetje' with its 14mm diameter is the smallest sized coin currently in use anywhere in the world. The Philips engineers in charge of setting the technical specifications for the Compact Disc (CD) gave this disc a very Dutch touch: the size of the center hole of a CD equals the size of the dubbeltje, and the Dutch dubbeltje is the only coin in the world that passes through a CD center hole. This will give you an idea of the dubbeltje's size, in case you don't have one at hand.
25 Cent Kwartje.
1 Guilder. (Gulden)
2.5 Guilder Rijksdaalder
5 Guilders.
hansb@cs.uu.nl.