The listing, ... 1955 S Wheat Penny ... has ended.
1955 S Wheat Penny
CoinTrackers.com has estimated the 1955 S Wheat Penny Value | CoinTrackers at a minimum of 15 cents, one in great shape can be worth $4 or more.
Lincoln wheat pennies were produced at three different mints: Philadelphia (no mint mark), Denver (D) and San Francisco (S). As illustrated in the picture below, the mint mark is located on the obverse of the coin, just below the date.
Uncirculated
This is A scan/picture of the coin, and I look the picture over and cropped it to show the penny in a better view.
I'm adding this website/page to help you with your coin collection.
http://coins.about.com/library/US-coin-values/bl-US0001-Lincoln-Wheat-Values.htm