Yeah, but to ancient collectors this doesn't ring that strong. When I own coins of Marc Antony, Cleopatra VII, Alexander the Great, etc, having such a "new" coin to me, (anything less than 1000 years old is pretty new to ancient collectors), of some poor ship that got sunk simply doesn't get me all that excited. Usually collectors of shipwreck coins have as their oldest coins these coins from shipwrecks, so to them they think they are "very old".