The Winged Liberty Head or “Mercury” dime was designed by Adolph A Weinman and was minted from 1916 until 1945. The design is still considered to be one of the most beautiful United States coins ever minted. The 1916 D which was minted in Denver only 264,000 were produced, thus making this coin in just about any condition worth quite a bit. But be careful when buying one because many of the 1916 coins produced in Philadelphia with no mint mark were altered by having a D added. Make sure you know the dealer or buy one that has been certified.