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.
SIMPLE ANSWER: No US coin dated 1965, 1966 or 1967 will have a mintmark, it's just a penny.
It is worth face value.
1965 penny is made of predominantly copper. worth 2-3 cents pennies before 1982 are valuable for there metal, but it is illegal to melt down US currency. So theoretically it's worth more. but you'll have a hard time selling it
a penny
A 1914 penny with no mint mark is worth about $1.50.
It depends on the mint mark
1930 Wheat penny: with no mint mark, in good condition is worth $0.10, uncirculated is worth $10.00. With D mint mark, in good condition is worth $0.15, uncirculated is worth 25.00. With S mint mark, in good condition is worth $0.15, uncirculated is worth $13.00.
A 1943 steel penny with no mintmark can be worth $.35 - $1.50
The value is determined by the date, mint mark, and condition. Without knowing any of those factors, your question is impossible to answer.
If you found the coin in circulation its worth about 3-6 cents. If it is in original mint packaging then it is worth about $1
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.
1936 Wheat Penny: With no mint mark, in very good condition is worth $0.10, uncirculated is worth $5.00, proof is worth $135.00. With D mint mark, in very good condition is worth $0.10, uncirculated is worth $8.00. With S mint mark, in very good condition is worth $0.10, uncirculated is worth $8.00.