Dealers will give you a price for,them, free, but they are the worst place to sell to. They will offer about 25% of their value. At least you will get an idea though. When you're looking at the dates, look for a letter, called a mint mark, as it can affect the price greatly. Morgan silver dollars marked CC are from Carson city, and are mormedesirable from most collectors. If a coin dosent have a mint Mark, then it was made in Philadelphia, which was the main mint. If you pm me a list of some of the older stuff I can give you a ballpark idea. One thing to know, NEVER CLEAN your coins. If destroys the value. I had a neighbor that had a collection of silver dollars. He had been polishing them with toothpaste for years, cutting the value by half.