Hello, Estella --
1973-S Lincoln cents are more challenging to find in pocket change than those from the Philadelphia or Denver mints. However, the 1973-S Lincoln cent, if worn, doesn't carry much, if any, numismatic value over face. It does, however, have a little extra value for its copper metal content. All copper-based Lincoln cents made before 1982 are worth about 2 cents for their bullion value.
Thank you for your question and photos,
Josh