The United States Mint sells rolls and bags of some coins that are referred to as circulation coins, but these coins are not circulated. While these are not proof coins, the term business strike seems more appropriate.
The half dollar is not circulated any more, yet the United States Mint sells both P and D mintmark coins as circulation coins. Collectors can obtain the half dollar coins from Mint Sets, or buy individual coins from a dealer, but will not find recent year half dollar coins in change, unless someone buys a roll, saves what is needed for a collection, and releases the others.
The America the Beautiful quarters with the S mintmark can be found in three quarter sets, rolls, and bags, but not in change. These cause anther problem in that some people do not realize there is a business strike version of the S mintmark quarters, so they are mistaken for either the proof quartr or the silver quarter. Still, collectors desire these in collections.
