Your question isn't clear.
If you're asking about an ordinary circulation coin like a nickel or quarter from the Philadelphia mint, it's impossible to provide a value without knowing its date. The only general answer would be that nearly all coins with "P" mintmarks are generally too new (since 1979 or 1980) to have any added collector value. The exceptions, of course, are the famous "war nickels" of 1942-1945. These were the first coins to ever carry a "P" mintmark and the only nickels that ever contained any silver. That small amount of metal - about 1 gram - gives them a melt value of around $1.
If you're asking about a cent-sized "coin" with a large letter "P" in the center, it's a mint medallion that was included in uncirculated coin sets for several years. There was also one for Denver, which naturally had a large "D". Mint medallions are all identical and don't carry dates. They're mostly just curiosities with essentially no collector interest. The reason they exist at all is that when production of Susan B. Anthony dollars was halted, the Mint still had large stockpiles of 6-pocket coin holders. The Mint struck medallions on 1-cent blanks and used them to fill the $1 pocket.
Please post a new question and include the date and condition of the wheat penny.
It depends on the year.
A wheat penny is worth about $1,000,000
one penny
penny
It depends on the condition of the penny
The value of a 1929 D wheat penny depends upon the condition that the penny is in. A 1929 D wheat penny that is not in good condition is worth about $4.00, a 1929 D penny in pristine mint condition is worth $446.
Please look at the date again. 1958 was the last year for Wheat Penny's.
Wheat cents were struck from 1909 to 1958
About 3 cents.
Please see
One cent
About 5 cents.
About 3 cents.