Values are:
No mint mark, "O", or "S" - about $17
"CC" mint mark - $100 if worn, $200+ with only moderate wear. Note that there are Morgan dollars and Trade dollars, but they're different coins. Trade dollars all have those words on the back. Plus, 1880 trade dollars were only issued in proof, so it's almost certain you have a Morgan dollar (the classic silver dollar most people think of)
NO U.S. Dollar coins are dated 1920. Look at the coin again and post new question.
They didn't mint 1920 US silver dollars.
None, because there's no such thing. There were no US silver dollars minted during the years 1905-1920.
The U.S. didn't mint any silver dollars in 1920.
No such thing. There were no U.S. silver dollars minted in 1920.
No silver dollars were minted from 1905 to 1920 inclusive.
No. There was a hiatus of U.S. silver dollars from 1905 through 1920.
how much is a 1799 silver dollar worth
No such coin exists. From 1905-1920 there was no dollar coin minted.
No such US coin exists. Silver dollars were not minted from 1905-1920.
THERE WERE NO SILVER DOLLARS MINTED IN THE UNIITED STATES AT ALL WITH A 1920 DATE! IF SOMEONE IS SELLING YOU SOMETHING LIKE THIS DO NOT BELEIVE IT!
One doller.Inless it was made before 1920.