The American Eagle Platinum coin is popular with investors and collectors who find the coin’s beauty and the purity guarantee of the U.S. Mint irresistible. All American Eagles have a U.S. Dollar face value imprinted, authenticating them as official U.S. tender. The one ounce platinum coin displays the highest face value ($100) ever to appear on a U.S. coin. Their value to investors is not in their face value, however, but in their platinum content.
Platinum is an interesting investing option. I invest in all the four main metals (Gold, Silver, Platinum and Palladium), mainly to reduce risk, but Platinum is the metal which gave me most of my gains in the past decade or so. If you know when to invest and when to divest, then platinum can yield you much better returns than gold and silver combined.