US Gold (Pre-1933) $2.50 Quarter Eagle

The quarter eagle was a gold coin issued by the United States with a denomination of two hundred and fifty cents, or two dollars and fifty cents. It was given its name in the Coinage Act of 1792, as a derivation from the US ten-dollar eagle coin. Its purchasing power in 1800 would be equivalent to $71.12 in 2015 dollars.  Wikipedia