If it has .999 Fine silver on it, it's a privately made "silver round" not a coin. The value would be for the silver by weight.
How much is a .999 fine silver coin worth Ten dollar redeemable cash value .999 fine silver limited edition collector's series ...
The current price of silver is about $14/oz.
I found a silver issued 2Gr fine silver 999 1776 coin hollow back with the # 8528178
50.00
The value of a troy ounce coin of 999 fine silver is based on the current spot price of silver in the market. You can calculate its worth by multiplying the weight of the coin in troy ounces by the current spot price of silver. Additionally, consider any premiums or fees that may apply when buying or selling the coin.
It's not a coin, it's a privately-issued bullion piece. It might sell for about $18 at today's silver prices.
There is a real Bill of Rights coin but it is a commemorative coin minted in 1993. Since yours has a 1991 date and "one troy ounce .999 fine silver" on it, I think you probably have a bullion coin and it is worth whatever the silver in it is worth on any given day.
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It depends on the weight of your .999 pure silver coin. Currenrtly silver is $24.13 per ounce.
Yes, "999 fine silver" and "999 pure silver" refer to the same thing, which means the silver is 99.9% pure. This is a high level of purity commonly used in bullion and jewelry.
No, it's not a fake, but it's not a coin, either. It's an ounce of silver bullion minted by a private manufacturer. See the Related Question "What is the value of one troy ounce of .999 fine silver?" for more information.