Oceans have long hidden the remains of ships that never completed their journeys. Many went down with vast amounts of cargo. Some of them were intended for trade, while the rest were looted in war.

Numismatic items up for auction from the SS Central America include this 1857-S $20 U.S. gold coin with deep golden red patina known as the “Golden Gate” coin (est. $75,000-$200,000). 13 troy ...

"The California Gold Rush: Getting there, Mining, Contemporary stories and accounts, Private coiners and assayers, San Francisco Mint -- Treasure of the S.S. Central America: Saga at sea of the ...