Two-headed coins with a head on each side and no tail are novelties valued at only a few dollars. The U.S. Mint has built-in safeguards to prevent the production of two-headed coins, such as specially shaped dyes that can only be used in the proper orientation and position.
Two-headed coins are manufactured for use as pranks by hollowing out one coin and pushing in another of the same type from the back. This method produces a seamless appearance that is hard to detect. Such coins are worth about $3 to $10. As of 2014, they can be obtained for less than $5 from novelty shops.