What is the value of a 1941 s type wheat penny?
The "S" is not a type but rather a mint mark indicating that the coin was minted in San Francisco. In Good (i.e. well-worn) condition it might be worth 5 or 6 cents; in Fine condition, around 35 cents; in Extremely Fine, about 75 cents to a dollar.
At this time. mintmarks were still hand punched into the working dies at the mint the coins were made at. Unfortunately errors of this type are common, but it still may have some extra value depending on how much of a slant it has. Show it to a couple different dealers for an idea of value, it won't be much.
This type of error is called 'Off Center'. The more of the impression missing, the more it is valued, but those with a readable date and mint mark are the most valuable. If your penny (with no date) is an Indian Head penny it is worth $55.00. If it is a steel penny it is worth $45.00. Wheat pennies and Lincoln Memorial pennies are only worth $3.50.