Please post a new and rephrased question with the coin's date and denomination.
A mint mark on a US coin is a small letter indicating where the coin was struck, so it can't be sold by itself - it's part of the coin. Especially on older coins, the mint mark can affect its value because coins of the same date may be scarcer from one mint than another.
This date regardless of mint mark is valued for the silver and is worth about $3.25
It is worth .25¢ The absence of a mint mark simply means it was minted at Philadelphia.
It is worth 1 cent.
About a dime.
It depends on the mint mark
a penny
Regardless of mint mark value is $14.00-$18.00
It is worth face value.
No mint mark means it's from Philadelphia. It's worth exactly one cent.
1946 nickel: With no mint mark, in very fine condition is worth $0.15, uncirculated is worth $0.85. With D mint mark, in very fine condition is worth $0.20, uncirculated is worth $0.90. With S mint mark, in very fine condition is worth $0.25, uncirculated is worth $1.00. 1947 nickel: With no mint mark, in very fine condition is worth $0.15, uncirculated is worth $0.50. With D mint mark, in very fine condition is worth $0.20, uncirculated is worth $1.00. With S mint mark, in very fine condition is worth $0.25, uncirculated is worth $0.80.
The mint mark by itself isn't worth much. It has to be on a coin. If you do have a 2001 coin with a D mint mark, it's far too new to have any special value unless it's a high-quality uncirculated coin.
No mint mark - $2 to $4 depending on wear "S" mint mark - $2 to $15