Instructions
Contact a local coin dealer. Ask him to evaluate the type, grade and worth of the silver dollar. Request an offer from the dealer. He will not pay the full retail value but will generally give you a fair price.
Sell old silver dollars at online auctions. Get an account with a service such as eBay. Take pictures of the coins, note their grade, condition, year and mint mark, then list the coins for sale. Take into account any fees the auction site or payment processor charges. These can eat into your profits.
If you know your silver dollars are exceptionally valuable, contact an auction house. Ask about their process and fees for selling silver dollars. You probably will have to send your coins to the company. Send the coins through registered mail and purchase insurance from the shipper.