There were two different designs and each has a possibility of one of 4 mintmark letters. In general, a couple of dollars or less depending on amount of wear and collector demand. You might also try a library for a copy of the Standard Catalog of World Coins for pictures, values and lots more interesting info.
No U.S. coins dated 1966 have a mint mark. The '66 quarter is worth 25 cents.
Usually between $6 and $15 depending on condition and mint mark
Like all coins, the value is based on the date, the condition, the mint mark and the demand for it. There is no one value that can be applied to all coins with a specific mint mark.
Value is about $1.00 and JS is NOT a mint mark it's the designers initials, the mint mark is on the reverse. Obverse mint marks were not used on dimes until 1968
Current value is about $7.00
2002 mint sets in original package have a value of $15.00 to $20.00. The penny has never had a P mint mark.
It is worth .25¢ The absence of a mint mark simply means it was minted at Philadelphia.
SIMPLE ANSWER: No US coin dated 1965, 1966 or 1967 will have a mintmark, it's just a penny.
what is the value for a 1972 dime
The M is not a mint mark but on every coin and is on the right side. The mint mark is to the left od the date slightly above.
Regardless of mint mark value is $14.00-$18.00
$50