See one of the sites below for more information about The Netherlands.
Dutch coins and notes can be bought, amongst others, from:
The Dutch National Bank provides lots more information and links to other related sites like foreign national banks. You once could also view small images of all banknotes with detailed information. This information became available on April 22nd, 1997). See also the website of designer Jaap Drupsteen.
Or some other money related links:
If you know of other sites on which you can view banknotes, please mail the URL. You can email me in both Dutch and English. Any other language is fine too, but I can not reply...