New details of gold coins found off the coast of Colombia around the "world's richest shipwreck" verify they are from the Spanish galleon San José, a treasure ship that sank in 1708 during a cannon duel with British warships.
The galleon was laden with up to 200 tons (180 metric tons) of gold, silver and uncut gemstones when it sank, and the treasure's modern value may be as high as $17 billion, Live Science previously reported.
