Apparently, the 10 cent coin ('dubbeltje') was the smallest coin
in circulation in the world. Dutch engineers at Philips used it to set
the diameter of the centre hole of the Compact Disc (CD) during it's design.
(Source: Hans L. Bodlaender's Coin Collecting page)
| 10 cent coin, 1996, front and back.
Reign (1980-2013) of Queen Beatrix (1938-).
| 10 cent coin, 1976, front and back.
Reign (1948-1980) of Queen Juliana (1909-2004).
ø 1.4 cm (0.55 inch).