i have a 1921 morgan dollar coin?

whats the use:( asked:


How much is it worth?
ok condition, what is a mint mark? it looks like this http://images.google.com/imgres?imgurl=http://www.coincommunity.info/coin/0100/1896-s-morgan-dollar-sm.jpg&imgrefurl=http://www.coincommunity.com/coin_histories/dollar_1878_silver_morgan.asp&h=300&w=600&sz=81&hl=en&start=2&um=1&tbnid=19CIU6hd8tcECM:&tbnh=68&tbnw=135&prev=/images%3Fq%3D1921%2Bmorgan%2Bdollar%2Bcoins%26svnum%3D10%26um%3D1%26hl%3Den%26rlz%3D1T4DKUS_en___US218
ok condition, what is a mint mark? it looks like this http://images.google.com/imgres?imgurl=http://www.coincommunity.info/coin/0100/1896-s-morgan-dollar-sm.jpg&imgrefurl=http://www.coincommunity.com/coin_histories/dollar_1878_silver_morgan.asp&h=300&w=600&sz=81&hl=en&start=2&um=1&tbnid=19CIU6hd8tcECM:&tbnh=68&tbnw=135&prev=/images%3Fq%3D1921%2Bmorgan%2Bdollar%2Bcoins%26svnum%3D10%26um%3D1%26hl%3Den%26rlz%3D1T4DKUS_en___US218