The United States Mint has struck more than 300 million George Washington Presidential $1 Coins. We have recently learned that an unspecified quantity of these coins inadvertently left the United States Mint at Philadelphia without edge-lettering on them. It is unknown how many of these coins without inscriptions on the edge have been placed into circulation.

The United States Mint understands the importance of the inscriptions “In God We Trust” and “E Pluribus Unum,” as well as the mint mark and year on U.S. coinage. We take this matter seriously. We also consider quality control a high priority. The agency is looking into the matter to determine a possible cause in the manufacturing process.

Production of the Presidential $1 Coin, with its unique edge-lettering, is a new, complex, high volume manufacturing system, and the United States Mint is determined to make technical adjustments to perfect the process. As we adjust this new process, we intend to eliminate any such defects.

Consistent with the agency’s practice in such situations, the United States Mint has informed the Office of Inspector General of the U.S. Department of the Treasury about this matter.