Nearly all American coins carry the motto "E Pluribus Unum" so that's not an identifying mark. Please post a new question with the coin's denomination. If there's a mint mark letter on the back...
Please check your pocket change. ALL coins in the U.S. carry that motto so its presence doesn't help to ID a coin. The mint mark and condition, as well as the date, are the most important factors....
The literal translation is "out of many, one." The motto is used on money in the United States, and on its national seal, signifying the unification of the states. The motto was originally adopted by...