PHILADELPHIA, March 7 (UPI) -- The U.S. Mint said Wednesday that it inadvertently created an unknown number of instant collector's items -- dollar coins without edge-lettered mottoes.
The coins are the first in a U.S. presidents series, starting with George Washington. The $1 coins, unlike earlier ones that bore the mottoes "E Pluribus Unum" and "In God We Trust" on the face, have them lettered around the edge.
In a statement, the mint said that officials there do not know how many of the 300 million coins struck so far are missing the mottoes. But the announcement is sure to have people checking their pocket change.
"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," mint officials said in a release. "As we adjust this new process, we intend to eliminate any such defects."