You need to provide more information. As you can tell from looking at your pocket change, ALL U.S. coins carry the motto E Pluribus Unum (three words, not one) so that's not a distinguishing characteristic. You need to let us know the coin's denomination as well. Before the mid to late 20th century, mint marks were on the reverse (back) side of coins. However, Philadelphia did not use the P mint mark at the time so it's also possible your coin does not carry any mark.
$27 to $120,000 depending upon the mint mark and the condition of the coin.
Regardless of mint mark value is $14.00-$18.00
$558.00
"E pluribus unum" is NOT a mint mark, but rather is the motto on the Great Seal of the United States. As far as a coin value, post a new question that includes the date and actual mint mark.
$558.00
The mint mark on all modern presidential dollars is on the edge of the coin, along with the date and the motto E PLURIBUS UNUM.
7-19-11>>> The national motto E PLURIBUS UNUM is on most all US coins dated 1879, post a new question with a denomination.
Post a new question and include denomination and mint-mark if it has one.
All U.S. coins have that motto (check your pocket change) so that does not determine its value. You need to know the coin's condition and mint mark instead. The mint mark, if there is one, will be on the back under the wreath. You can then look at a range of prices for different conditions and mint marks at the following link:
Please check your pocket change. ALL coins have the motto E Pluribus Unum so that is not a distinguishing characteristic. Could you post a new question with the coin's date, mint mark, and condition? Thanks!
If your coin says E PLURIBUS UNUM on it, then it's not a U.S. Mint Gold Dollar. It may be a gold plated silver dollar -- in which case it is currently worth about $20 If it's something else, then it will only be worth whatever melt value it may have.
There is no such thing as an E Pluribus Unum coin. You need to give us the denomination and year before we can even begin to remotely help you. All E Pluribus Unum tells us is that you have a US coin which isn't much help to us because depending on the design of the coin and the denomination the mintmark could be in a number of places.