The coin is a Morgan Dollar and value depends on condition and if it has any mintmarks, look on the back under the eagles tail for small letters, an O,S or CC if no mintmarks are seen the coin was struck in Philadelphia. The mintmarks are very important to value. Look at the coin again and post new question.
The minimum value as of 3-8-11 is about $25.00 just for the silver.
100
There's no such coin. An 1889 US silver dollar was minted for spending, not for investment, and was very different from modern "silver eagle" coins that do contain 1 oz. of silver. Morgan dollars contained one dollar's worth of silver, about 0.77 troy ounces at the time. The coins' inscriptions indicate their value (ONE DOLLAR on the back) and not their silver weight. There's more information at the Related Question.
It's actually a real silver dollar called a Morgan dollar after its designer George Morgan. The "eagle" coins weren't issued until the 1980s and are bullion coins sold as investments and not for spending, but Morgan dollars were struck for use in ordinary commerce back in the days when silver was worth far less than it is now. You could get them at a bank and spend them like any other coin.
If your coin actually is a Mint State 1889 Morgan dollar, typical MS coins are $50.00-$75.00 depending on grade.
Please post a new question with the coin's denomination. Quarters, half dollars, and silver dollars from 1889 all fit your description.
About 5-10 dollars
100
There's no such coin. An 1889 US silver dollar was minted for spending, not for investment, and was very different from modern "silver eagle" coins that do contain 1 oz. of silver. Morgan dollars contained one dollar's worth of silver, about 0.77 troy ounces at the time. The coins' inscriptions indicate their value (ONE DOLLAR on the back) and not their silver weight. There's more information at the Related Question.
In circulated condition they are worth on average $16 to $20. 1889 Morgan dollars struck at Philadelphia are not rare dates.
It's actually a real silver dollar called a Morgan dollar after its designer George Morgan. The "eagle" coins weren't issued until the 1980s and are bullion coins sold as investments and not for spending, but Morgan dollars were struck for use in ordinary commerce back in the days when silver was worth far less than it is now. You could get them at a bank and spend them like any other coin.
If your coin actually is a Mint State 1889 Morgan dollar, typical MS coins are $50.00-$75.00 depending on grade.
Please post a new question with the coin's denomination. Quarters, half dollars, and silver dollars from 1889 all fit your description.
The coin is a Morgan dollar and assuming no little letters on the back of the coin under the eagle (S-O-CC) the value is $17.00-$26.00
46 dollars
Your 1889 "e pluribus unum coin" is actually a 1889 Morgan dollar, this series of silver dollars were made from 1878 to 1904 & 1921 at 5 different Mints. The 1889 date is very common and assuming the coin is circulated and has no mintmark retail values are $17.00-$26.00
$27 to $350,000 depending upon the mint mark and the condition of the coin.
The value of a 1889 US silver dollar can vary depending on its condition, rarity, and any unique features it may have. As of current market values, a circulated 1889 silver dollar is worth around $23-$30. However, if the coin is in uncirculated or highly graded condition, its value can be significantly higher.