Coins of Intrigue: 10 U.S. Pattern Coins That Never Made It to Your Pocket

1849 Double Eagle

1877 Fifty Dollar Gold (two varieties)

1906 Barber Double Eagle

Silver Center Pattern Cents of 1792

$4 Stella Gold Coins

1868 Large Cent-Sized, Copper-Nickel, Ten-Cent Piece

Half-Union Pattern Coin (1877)

1974 Aluminum Cent

1792 Half Disme

Experimental Patterns for Sacagawea Dollar (1999)