The 1787 Fugio Cent

The 1787 Fugio cent may not have established the same world records as the other two coins on our list, but it can still be a costly collection with a fascinating history. The Fugio cent, often known as the Franklin cent after founding father Benjamin Franklin, is said to be the first currency to circulate in the newly founded United States. This is one of the most expensive coins in the world.

The coin depicts a sun and sundial with the Latin phrase "fugio," implying that the sun and time are flying, in keeping with Franklin's wit. "Mind your business," the coin states at the bottom, an encouragement for the holder to physically pay attention to their business matters. The phrase "We are one" appears on the back of the coin, with 13 links in a chain representing America's original 13 states.

Price: $10,000