Salvage company 1715 Fleet-Queens Jewels LLC recovered more than 1,000 silver coins and five gold coins worth around $1 million from a 1715 Spanish shipwreck off Florida’s Treasure Coast.

The coins, known as “reales” and “escudos,” were retrieved by Captain Levin Shavers and the crew of the M/V Just Right.

The shipwreck was part of the 1715 Treasure Fleet, which was transporting wealth from the New World to Spain when a hurricane sank 11 ships and killed about 1,000 people.

Historians estimate that the fleet carried roughly $400 million in gold, silver, and jewels, making each recovered coin a valuable historical artifact, USA Today has reported.

Queen Jewels, based in Sebastian, Florida, holds exclusive salvaging rights and works with treasure hunters, museums, and archaeologists to preserve the site.