WASHINGTON-Two antique American gold coins sold for more than $7.8 million when they went under the hammer in Florida, auction organisers confirmed Friday.

The first gold coin ever made for the United States - a “Brasher Doubloon” struck in 1787 by a neighbor of George Washington - fetched $4,582,500, Heritage Auctions said.

A nickel made at the Philadelphia Mint in 1913 that was once featured in an episode of the 1970s television show “Hawaii Five-O” raised $3.3 million. The coins were sold as part of a sale that has generated more than $55 million so far, Heritage Auctions said. “The legendary Brasher Doubloon is one of the most important coins in American history because it’s the first gold coin struck for the young United States and it’s one of only a handful that exist,” said Todd Imhof, executive vice president of Heritage Auctions.