This 1794-dated U.S. silver dollar is believed to be among the first silver dollars struck by the United States Mint.

Last week he bought a penny for $72,500. This week, he plans to sell it again. It's something he knows well, Steve Contursi has been in the rare-coin business for 30 years.

Coin collecting experts say they have identified a 210-year-old silver dollar that is likely the first one coined by the United States Mint.