This is a piece of authentic sunken treasure, a silver galleon, from the Nuestra Senora de Atocha shipwreck in 1622. The silver originates from Spain and comes with a Certificate of Authenticity (COA) that tells the shipwreck and recovery story. This maritime antique features intricate designs and historical significance, making it a valuable collector's item for those interested in maritime history and nautical archaeology. The COA adds an extra layer of legitimacy to the piece, ensuring its authenticity.