The mint mark is a "D" (for "Denver"), not an "O".
Please see the Related Question for more information.
5 cents to $36,000 depending upon the condition of the coin.
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.
2002 mint sets in original package have a value of $15.00 to $20.00. The penny has never had a P mint mark.
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.
A 1914 penny with no mint mark is worth about $1.50.
So very many were made is just a penny
A 1943 steel penny with no mintmark can be worth $.35 - $1.50
Value will vary depending on condition and mint mark. About $0.35
The lack of a mint mark means it was struck in Philadelphia, and value is 1 cent.
A 1936 US penny with no mint mark is a common coin and is typically worth around 15 to 50 cents in circulated condition. In uncirculated condition, it may be worth slightly more to collectors. The value of the coin can also vary based on factors such as its overall condition, rarity, and demand in the numismatic market.
Regardless of which mint mark it has, values are 5 to 10 cents. Uncirculated coins are a dollar or less.
8 to 20 cents depending on condition.