In 2007 the U.S. Mint began honoring the United States Presidents on circulating coins under the Presidential Dollar Coin Program. Under this program, four Presidential Dollar coins will be issued per year. Each President’s portrait will be struck on one dollar coins and released for circulation for a period of three months. Each President will appear on mint state, proof and satin finish one dollar coins in the order in which they served as President of the United States. Each Presidential Dollar will bear the same Statue of Liberty reverse design. All Presidential Dollar coins contain edge lettering inscriptions with the date and mint mark.