As of 11/25/2011, about $32.
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.
Silver is currently valued at about $13.50 per ounce. A dealer will buy single ounce bars or rounds for about $10 or sell them for about $16.
512.00 is the spot price on the current market for 1 pound troy ounce fine silver morgan dollar proff dated 1878 but my advice is find a coin dealer or even better a private coin collector and your coin would be worth closer to 750.00
Silver is trading at about 28.50 an ounce. A half ounce of silver is worth about 14.25.
Silver is currently selling for about $17 an ounce. A dealer would sell this coin for about 10-15% over spot price or buy it about 10-15% below spot.
August 19, 2009 It is worth $14.00 today.
It's a silver round not a "coin" value is whatever the spot price of silver is at time of sale.
....Its a 1 ounce bullion coin/round. These are privately minted rounds produced as an easy way to invest in silver. They are usually not dated because they are not numismatic products and aren't collected as a coin is. Rather they are just worth their intrinsic silver value. Today they are worth about $30, but it depends on silver spot price.
The U.S. did not make any dollar coins dated 1816. From your description, it's a silver round not a genuine coin. Value is about $19.00.
It's not really from 1799. The "one troy ounce" is a giveaway that it's a modern bullion coin, worth slightly more than whatever the current spot price of silver is.
I have one of these coins. Just wanting to know the value.
£23-£25