However, the degree to which its mintmark disappears can drive up the price. Pennies with visible mintmarks are cheapest. "Ghost" (barely visible) mintmarks can fetch some money. The plain of the coin ...
One of the rarest is the Kew’s Garden 50p, which was designed to mark the 250th anniversary of the gardens in 2009. Only 210,000 coins were ever minted with this design. The Kew Gardens 50p sells for ...
Demand for the more common 1795 Silver Dollar keeps prices high, but the first silver dollar struck by the U.S. mint one year earlier is one of the rarest and most valuable of all U.S. coins ...