There are no silver flying eagle dollars issued from 2000-2004. You must mean Silver Eagles they have a Walking Liberty on the obverse and an eagle with it’s wings open but is not flying, on the reverse. They are actually larger than the old Morgan silver dollars. I hope they were in some kind of protective device. the 2000 through 2004 sell for the same $15.90 each. Dealers of course pay less. What you have is considered a bullion coin and it’s value depends on the price of silver and mintage. The reason it has a dollar on it, is to legitimize it as a coin of the U.S. It was a sneaky way to make a medal a coin.