How much is a E pluribus unum 1881 coin worth?

Please take a look at your pocket change. Every single U.S. coin has the motto E Pluribus Unum on it so that doesn't help to ID anything.

Post a new question with the coin's denomination, and if you can locate the mint mark, that as well. On coins from 1881 it will be a small O, S, or CC on the reverse side. However the Philadelphia Mint didn't use a letter back then, so your coin may not have a mint mark at all.