Assuming that you are referring to US Coins, those minted by the Philadelphia mint had no mintmark until 1980 (pennies still do not) except for nickels minted 1942 through 1945 and the 1979 Susan B. Anthony dollar coin. Note also that no US coins minted in 1965 through 1967 had mintmarks, regardless of where they were produced..
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The letter D is the mint mark so it can't both have a mint mark and not have a mint mark.Please see the related question for more information.
This date regardless of mint mark is valued for the silver and is worth about $3.25
"cc" is a mint mark. The Mint mark shows where the coin was made. "CC" stands for Carson City, Nevada.
No mint mark means it's from Philadelphia. It's worth exactly one cent.
It is worth .25¢ The absence of a mint mark simply means it was minted at Philadelphia.