Platinum American Eagle
In addition to gold and silver, platinum bullion coins are minted, along with some platinum commemorative issues. Platinum often costs more than gold, but occasionally the prices cross and gold becomes the more expensive metal. This means platinum coins compete more with gold coins than with silver. Today, gold and platinum are within ten dollars per ounce of each other in value, which is a small percentage of the just over twelve hundred dollars an ounce each is valued at.
There are fewer platinum coins available, so they tend to be priced at a premium.
As with gold, platinum coins are often minted in fractional sizes, which means less than one ounce. This is a way of mints actually selling them, since smaller coins are affordable by a larger number of collectors.
The United States Platinum Coins
The United States first issued platinum coins in 1997, and has issued four sizes each year. The smallest among them is the one-tenth ounce coin which has a denomination of ten dollars. The one-fourth ounce coin has a denomination of twenty-five dollars. The fifty dollar denomination is reserved for the half ounce coin, and the one hundred dollar denomination is used for the full ounce coin.
Only one obverse has been used on all of these, but a multitude of reverse designs have appeared over the years.
Gold and Silver American Eagles Reference
Canadian Platinum Coins
The Royal Canadian Mint has struck both bullion platinum coins and commemorative coins. The earliest Maple Leaf, or bullion type, was struck in 1988 with the one ounce, one-half ounce, and one-tenth ounce coins being the first of the series. To these were added the one-twentieth ounce, one fifteenth ounce, and one-quarter ounce coins. The denominations are one dollar for a twentieth of an ounce, two dollars for a fifteenth of an ounce which was struck only in 1994, five dollars for one-tenth of an ounce, ten dollars for the quarter ounce, twenty dollars for the half ounce, and fifty dollars for one ounce. The platinum maple leaf was last issued in 1999.
Concurrent with the Maple Leaf platinum coinage from 1990 through 1999, then continuing onward past the minting of bullion platinum coins, are the commemorative coins. The denominations are thirty dollars for the tenth ounce, seventy-five dollars for the quarter ounce, and three hundred dollars for the full ounce coin.
In the past, the Perth Mint has issued five platinum Discover Australia coins annually in multiple sizes. These are beautiful colorized coins, and come in sizes that may make them more affordable.
In 2014 the Pink Diamond Argyle platinum bar was an incredibly beautiful release for which a platinum bar was set with sever pink diamonds. This, along with its gold argyle pink diamond companion ingot has become one of the most spectacular ingots ever made.
The current Australian platinum bullion coin is the one ounce Platypus. Prior to the Platypus, platinum koala coins in multiple sizes were Australian platinum bullion coinage.
Few Other Platinum Coins Are Minted
Platinum coins are not plentiful, and most are minted in low quantities. Many mints do not produce platinum coins at all. In addition to the above, the most likely platinum coin you might encounter is the Chinese Panda.
Many collectors in the United States would choose the United States coin, and the reverse does have some variety. The nicest are the Australian issues, and after the argyle pink diamond ingot I would recommend the colorful collectible coins. Some years back there was a three year series of the Discover Australia topics, and the platinum coins consisted for five coins per year depicting flowers indigenous to Australia. Those fifteen coins are rarely seen, but constitute what is a remarkably beautiful set of coins. They would be my first choice if they become available and can be afforded.