Currency has existed in coin form since the days of the ancients -- but not all old coins are on display in a museum. Some old coins are still being used as legal tender today. Before you start ...

Mombasa, Kenya: In 1993, a mysterious old coin was found in Likoni, Mombasa, near the former summer palace of the Sultan of Zanzibar, overlooking Kilindini Port. The coin was copper in colour and ...

There are 420 billion of them in circulation, according to Stanley Chu, the manager at Stacks & Bowers Galleries in Boston, the oldest coin auction house in America. He said pennies are the most ...