5 Dollars (National Law Enforcement Memorial and Museum)

The 2021 National Law Enforcement Memorial & Museum $5 Gold Coin

In 2021 the U.S. Mint struck a tiny gold coin to honor America's fallen police officers — and to bail out a museum drowning in debt. Congress allowed up to 50,000. By the time sales closed, the uncirculated version had found fewer than two thousand buyers, making it one of the scarcest modern U.S. gold commemoratives.