Famous US coins include the 1804 Silver Dollar. No one struck 1804 dollars, despite their moniker. Foreign dignitaries received 1830s diplomatic gifts. Rare and valuable with 15 remaining examples.
One Mint employee illegally struck five Liberty Head Nickels in 1913. The redesign Buffalo Nickel was supposed to replace it. One of the five specimens sold for $3 million in 2013.
1933 Double Eagle is the most expensive auction coin. Over $7.5 million was spent on the 2002 specimen. Many 1933 Double Eagles were melted down after the U.S.
The first US Mint silver dollar was the 1794 Flowing Hair Dollar. Fewer than 150 of 1,758 coins remain.
Rare US coins include 1870-S Three Dollar Gold Piece. Only one exists, thus collectors appreciate it.
As an experiment, the US Mint manufactured aluminium pennies in 1974. Because people rejected them as dimes, they were recalled and burned. Few have survived, making them valuable to collectors.
A 1916 Standing Liberty Quarter was altered due to complaints about Liberty's exposed breast. Collectors appreciated the 1916 chest-chainmail variant.