The 1787 Brasher Doubloon was originally worth about $15 and is one of just seven coins which were produced back in 1787.

The coin is of great historical significance, as it was the first gold coin in the denomination dollars and it set forth how the USA’s monetary system would go forward, according to Jeff Sherid of PCAG Inc, a rare coins specialist.

The firm’s current owner, who is a former Wall Street executive bought the coin through PCAG INc for an undisclosed sun in 2015, according to Robb Report.

PCAH Inc is currently offering the coin privately at an asking price of $15 million, though the firm believes it could reach $100 million in the future.