Euro gold and silver commemorative coins (Netherlands)

The commemorative coins of Netherlands are minted by the KNM (the Royal Dutch Mint)
The value of a Dutch silver coin corresponds with the theme of the coin. If the coin has a royal theme, then the face value is 10 euro. Any other subject and the coin will be of face value 5 euro.
The same principle with the gold coins, which have face values of 10 euro and 20 euro. Sometimes also 50 euro gold coins are issued.