What is the value of a 1940 wheat penny without a mint mark?

Circulated rolls of 1940's sell for 75 cents to $1.00 so about 2 cents. It's a common date, worth between 5 cents and a couple of dollars depending on condition. It would not be worth anymore then $2 as there are Indian head pennies from the 1800's still floating around. The mint mark being gone also damages the value. A perfect 1940 wheat goes for about $5-6