Foreign Coins
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PCGS Key Dates and Rarities Index

“Key Date” and ultra rare coins have in the past, been excellent investments. A “Key Date” coin is generally considered to be the most important coin in a series, usually the lowest mintage and, or most expensive. Rarity is based simply the number of specimens extant of a particular item.

The coins represented by this Index, increased in value 9,523 % since January 1970. By comparison, the Dow Jones Industrial Average has risen 1,340 % since 1970 (adding dividends would make that figure higher). This significant difference in performance is primarily a result of quality (Mint State)coins outperforming the overall market.

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This chart represents the value increase of $1,000 invested in “Rarities” and “Coins with key Dates” in 1970. Valuations in the coin market spiked in 1989, simultaneous to the advent of grading and encapsulation. Values continued a steady rise through 2004, counter to fluctuations in the Stock market.
When Gold soared to over $850 an ounce in 1980, rare coins went up more than twice as much, and continued to go up after the price of gold turned down. Bull markets in rare coins have always occurred during or after periods of rising gold prices. Reliable independent reports show that the average annual returns on rare coins have historically been more than twice as great as the returns on gold bullion.
Go to and check out these and other coin index graphs. They are a great resource to help you educate yourself, when it comes to rare coins as investments.
One final thought, as we always say “Diversification is the Answer”. Carefully consider rare coins as part of your investment portfolio. You will find that in the long run, the time tested methods of diversity in your investments, are a solid strategy.