I can remember being a small child and pestering my mother for weeks to score me a jar of this stuff after catching the television promos and the ads in various DC Comics of the era.
After my whining and begging (much like a puppy, as my mother recalls it) bore fruit....or, as it was, peanut butter, I actually kept the jar for years afterwards. I don't ever remember whatever became of the jar, but for years I shoved pennies into it and it sat in the window ledge of my old bedroom upstairs in my father's house....at some point it disappeared after I left home and went to college.
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Superman Peanut Butter TV promo AVI file