Found this coin on a coin roll hunt. Is this a common coin or the coveted Roosevelt 1975 no s mint mark. The coin is a circulated coin. Let me know.
The coveted coin you are looking for is a proof strike (made for collectors) - yours is a business strike (made for people to spend.) Your coin is absolutely normal, and worth face value. For reference, this is the 1970 No S Proof Roosevelt Dime I found a few years back in a proof set:
Philadelphia mint, no mint mark. No mint mark means Philadelphia. S means San Francisco. D means Denver.
As explained in this thread, no mintmark means common Philadelphia minted coin. If yours is from a proof set then it is the valuable one.