It would depend on the condition of the coin and how rare of a coin it is. You can go to the store and buy a Red Book and that will give you an approximate value.
The exact value of the coin depends on its condition, the mint mark on the coin, and a number of other factors, not the least of which is how much someone is willing to pay for it. It is likely worth at least $200 US.
The worth of of the coin will depend on coin qualit and, who you auction it through (better known companies will be able to attract clientele that will pay top dollar). I have seen them go between $1,300-$1,600.
