Things You'll Need
Instructions
Research the types of platinum coins available from the United States Mint. Platinum coins currently come in denominations of $10 (one-tenth of an ounce), $25 (a quarter ounce), $50 (half an ounce) and $100 (a full ounce).
Locate a dealer that sells platinum coins. There are various types of dealers available, including banks, coin dealers and brokerage firms that specialize in precious metals.
Set a budget to purchase your coins. Since platinum prices vary on a daily basis, determine in advance how much you to want to spend for a specific number of coins.
Study the precious-metal market to determine the best time to buy platinum coins. Collectors should invest when the price is low.
Purchase your coins by placing an order with a broker or getting in touch with a coin dealer. Make sure to research the seller's expertise before making a purchase.