No mint mark means it's from Philadelphia. It's worth exactly one cent.
If it has a D mint mark it's worth 1¢ If it has an S mint mark, it WAS a proof coin worth about a $1.50, but now that it's been removed from its Mint holder, it's lost most if not all of that extra value.
With no mint mark, 25c to $5 depending on condition. With an S mint mark below the date, $1.50 to $33.
Assuming you're referring to a U.S. cent, 5¢ to 25¢ depending on condition and mint mark.
There has never been a buffalo penny issued, only nickels. Please check again and post a new question with the coin's date and mint mark.
If it has a D mint mark it's worth 1¢ If it has an S mint mark, it WAS a proof coin worth about $1.40, but now that it's been removed from its Mint holder, it's lost most if not all of that extra value.
a penny
The mint mark does not determine the value of a coin. If you have a penny and want to know what it is worth, please submit a new question and include the date on your penny as well as the mint mark.
It depends on the mint mark
A U.S. 1965 cent (not penny) was minted without a mint mark. It is a common coin. A 1965 Great Britain penny is worth 10 cents if uncirculated.
The lack of a mint mark means it was struck in Philadelphia, and value is 1 cent.
If it has a D mint mark it's worth 1¢ If it has an S mint mark, it WAS a proof coin worth about a $1.50, but now that it's been removed from its Mint holder, it's lost most if not all of that extra value.
the 1971 no mint mark penny cost 10 cents
It is worth face value.
With no mint mark, 25c to $5 depending on condition. With an S mint mark below the date, $1.50 to $33.
From $1 to $65,000 depending upon the mint mark and the condition of the coin.
1 cent, they are easily found in pocket change.
The coin is still in circulation today and is only face value