Gold coins worth $13M found in 500-year-old shipwreck

Diamond miners recently discovered a ship that went down 500 years ago after draining a man-made lagoon on Namibia's coast. While shipwrecks are often found along Africa's Skeleton Coast, this one just so happened to be loaded with $13,000,000 worth of gold coins. It also answers a centuries-old mystery and is what some archaeologists are...