How much is a 1945 penny worth with no markers mark?

A 1945 penny without any mint mark is from the Philadelphia Mint and is generally worth around 2 to 5 cents in circulated condition. If it's in uncirculated condition or has higher grades, its value can increase significantly, potentially reaching several dollars. However, the exact worth can vary based on demand and the coin's overall condition. For a precise valuation, it's best to consult a coin dealer or reference a current coin pricing guide.