Superman Peanut Butter
Superman Peanut Butter.  The jar on the left is Creamy Style, empty from 1985.  Center is Crunchy Style, full/unopened from 1981.  Both are glass.  A lot of people mistake the Crunchy for being older than it is.  On the lid, next to the "S" symbol is "Copyright 1944" which refers to the symbol and not the jar.  This mistake is made when the jar is lacking it's label.  The one on the right is from the early 90's, full/unopened and is plastic instead of glass.
Check it Out!!!!
Click the picture above to see pictures and video from the old Superman Peanut Butter TV commercial!