The San Jose galleon, sunk off Colombia in 1708, could hold more than $20B in treasure
                                
                                
                                    (Newser) -
                                    Researchers have confirmed that gold coins recently studied near the wreck of the San Jose, a Spanish galleon sunk off Colombia in 1708, do indeed come from the famed ship. The San Jose, often called  the "holy grail" of shipwrecks , was carrying gold, silver, and gems believed to...