These coins were issued in the United Kingdom and based on what I could gather they are not intended for use other than to remember Princess Diana. It was said that only 50,000 of the coins were made and sold.
There were about 50,000 princess Diana coins released. These coins were not really intended to be used as true currency for purchasing products. They are more of a collectors coin.
There were two coins created to comemmorate Princess Diana. Both coins were 5 pound coins. One of the coins is gold plated silver piedmont coin inlaid with diamonds, the mintage limit of which was only 499.