I am relatively new to all of this. I think that I may have the no (s) 1968 roosevelt dime just looking to get a second opinion.
Your coin is a 1968-P (The "P" mint marks on the dimes didn't start till 1980) The 1968-S is a Proof dime. You dime is a business strike dime. Sorry
The 'no S' designation refers to proof coins of that denomination. The pictured coin is a business strike, not a proof coin.
So I have a no 's' double die no edge lettering 1970 dime. How much can I get for it if I clean it with a brilliant pad?