The most valuable of those coins — a 1976-S Bicentennial Silver Quarter that came in with a very high grade — sold for $19,200 at auction a few years ago, according to the Chronicle ...

The half dollar is one of the most popular U.S. coins to collect. Though many aren’t worth more than their face value, older half dollars often hold value due to the silver in their composition ...

The Mint produced the bicentennial coins between 1975 and 1976 as a special edition. They were notable for being the first U.S. quarters in more than 50 years to feature a special reverse design. The ...