Not at all. Denver-mint coins always carry a D mint mark. You're thinking of coins made in Philadelphia, which generally did not have a P mint mark until 1980.
The exceptions for Philadelphia coins are:
> 1942-1945 "war nickels" have a P
> 1979 $1 coins have a P
> Cents made in Philadelphia don't have a mint mark, regardless of their date.
The mint mark position on all Walking Liberty halves after 1917 is the 8:00 position. Possible letters are: Blank = Philadelphia D = Denver S = San Francisco
Walking Liberty halves were struck at all 3 mints that were active at the time. No mint mark = Philadelphia, S = San Francisco, D = Denver
If it was minted in San Francisco or Denver, there will be a small S or D above the yoke of the Liberty bell. Philadelphia did not use a P mint mark back then, so coins without a mint mark are from that city.
1892 Liberty silver dollar mint mark in on the reverse just above and between the D and O in Dollar at the bottom of the coin. Mine is marked with an S.
On the back of the coin under the "O" in "ONE" there should either be no mark, a D or an S. If your coin has no mark, it was minted in Philadelphia. If it has a D it was made in Denver and if it has an S it was made in San Fransisco.
1940 makes it a Walking Liberty half, so the mint mark is on the reverse (tails) side, directly below the leaves of the branch, to the left of the word "half." D is Denver, S is San Francisco, and no mark is Philadelphia.
If it has one, it is on the reverse just above DO in DOLLAR.
Remember that CC is just one possible mint mark on a silver dollar. It could have an S (San Francisco), O (New Orleans), D (Denver, 1921 and later), or no mint mark if it was struck in Philadelphia. > On a Seated Liberty dollar (up to 1873) the mint mark is below the eagle on the coin's reverse. > On a Morgan dollar (1878-1921) the mint mark is below the wreath and above the letter O in "ONE"
Please look at the mint mark more closely. It's probably an O for New Orleans. The Denver Mint didn't open until 1906.
Below the eagle on the reverse.
Mintmarks are on the reverse above the letters DO in dollar
If you mean a D or S to the left of the eagle close to the rim on the back of the coin it's a mint mark. D is for Denver. S is for San Francisco.