* 1804 Draped Bust Silver Dollar: Another rare coin from the early days of the United States Mint, the 1804 Draped Bust Silver Dollar was originally minted in 1803 but dated 1804. Only a handful of these coins are known to exist, and they are considered some of the most valuable coins in the world. The value of an 1804 Draped Bust Silver Dollar can reach into the millions of dollars.
* 1933 Double Eagle: The 1933 Double Eagle is a gold coin that was minted in 1933 but never released to the public. President Franklin D. Roosevelt ordered all of the 1933 Double Eagles to be melted down, but a few are believed to have escaped destruction. The value of a 1933 Double Eagle is estimated to be in the hundreds of thousands of dollars.
* 1943 Copper Penny: The 1943 Copper Penny is a rare coin that was minted in 1943 using copper instead of the usual steel. The United States Mint made this change due to a shortage of copper during World War II. The 1943 Copper Penny is worth significantly more than a regular penny, and its value can vary depending on its condition.
* 1955 Doubled Die Lincoln Cent: The 1955 Doubled Die Lincoln Cent is a rare coin that was minted in 1955 with a doubled die error. This error caused the letters and numbers on the coin to appear doubled. The 1955 Doubled Die Lincoln Cent is worth significantly more than a regular penny, and its value can vary depending on its condition.