For the 250th anniversary of "the shot heard round the world," Northeast Numismatics in Concord, Mass., supplied Dan Carr with 250 of the 1925 commemorative half dollars to be overstruck for 2025.

An early map of Washington, D.C., is the latest scene featured in the Tiffany Art coin series, with a blue glass river insert adding visual appeal to the 3-ounce silver $20 coin struck in the name of ...