Whatever someone is willing to pay for it.
The coin you are referring to is a $50 gold piece. They are very expensive and are bullion coins and contain a troy ounce of gold.
The current spot price of silver is about $43 per troy ounce.
Those coins likely are never going to be worth more than their weight in silver...2 troy ounces... http://lmgtfy.com/?q=how+much+is+2+troy+ounces+of+silver+worth
how much is a troy ounce worth?
It isn't an error, it is a privately minted round. It isn't legal tender and the actual design gives it no value. What does give it value however, is the 1 troy ounce of silver in it, at the time of writing silver was around $28.69 an ounce, so that is what your silver round is worth. Keep in mind that silver prices are very volatile and increase or decrease daily.
From your description this is not a US Mint product, it's a privately minted replica of the 2001 American Buffalo silver dollar, the value is for the silver only, about $26.00.
In 1853, a Troy ounce of gold was worth $20.67. It retained this value until 1934 when it was raised to $35.00 an ounce.
todays price how much is a toy ounce of silver worth price troy ounce silver
$20.63 a troy ounce.
Troy measure1 troy ounce = 480 grains1 troy ounce = 24 scruples1 troy ounce = 20 pennyweights (North American jewelery trade)1 troy ounce = 1.097 ordinary ounce1 troy ounce = 8 drams1 troy ounce = 31.1034768 grams.1 troy ounce = 120 carats1 troy ounce = 155.52 metric carats (diamonds / precious stones).3.75 troy ounces = 10 tolas (Indian sub-continent)6.02 troy ounces = 5 taels (Hong Kong)12 troy ounce=1 troy pound14.583 troy ounce =16 avoirdupois ounce (1Pound)32.15 troy ounces = 1 kilogramme (Kilo)32,150 troy ounces = 1 metric ton (1,000 kilos)1000 troy ounces = 31.1 kilogramsTroy measure1 troy ounce = 480 grains1 troy ounce = 24 scruples1 troy ounce = 20 pennyweights (North American jewelery trade)1 troy ounce = 1.097 ordinary ounce1 troy ounce = 8 drams1 troy ounce = 31.1034768 grams.1 troy ounce = 120 carats1 troy ounce = 155.52 metric carats (diamonds / precious stones).3.75 troy ounces = 10 tolas (Indian sub-continent)6.02 troy ounces = 5 taels (Hong Kong)12 troy ounce=1 troy pound14.583 troy ounce =16 avoirdupois ounce (1Pound)32.15 troy ounces = 1 kilogramme (Kilo)32,150 troy ounces = 1 metric ton (1,000 kilos)1000 troy ounces = 31.1 kilograms
16 ounces is equal to 1 pound. So 1 ounce is 1/16 of a pound.
That's not an actual dollar coin, but rather a silver bullion round. The coin might not have a date, but it should at least mention its weight. As of 19 February 2014, silver is worth $21.84 per troy ounce.
A troy ounce is about 31 grams and the US standard ounce (avoirdupois) is about 28 grams. When buying coins, or gold or silver, you get more by getting a troy ounce. The price of gold and silver is in troy ounces. So, for example, if gold is $1400 an ounce, that price is for a troy ounce. A 28 gram ounce of gold is not worth $1400.