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LAKoenke

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  1.    l.cutler reacted to a post in a topic: 1977 D Penny
  2. LAKoenke
    Very interesting!! Learn something new today!
  3. LAKoenke
    Thank you. It's in a bag and will be kept. Maybe in 100 years it will be worth 5 cents
  4.    LAKoenke reacted to a post in a topic: 1977 D Penny
  5. LAKoenke
    But how is it magnetic? Pennies before 1992 were not magnetic. Before 1992 the pennies were made of copper and zinc, which both were non-magnetic. Clearly this has either steel, iron, nickel, or cobalt in order for it to magnetic. That's whats confusing. And if this was an experiment in 1977, how did they coat it with steel or nickel? Is that possible? Did they actual melt the metal to do this back then? Wouldn't that require a very high temperature to melt? and dangerous? And wouldn't some of the markings be less defined if it was coated? and wouldn't coating it effect the weight? The experiments I found was putting pennies in a solution zinc sulfate solution in order to make them silver. That wouldn't make it magnetic.
  6. LAKoenke
    I found this 1977 D penny kept by my Grandma. It has a silver color, weighs 0.11 oz/3.2g and does stick to a strong magnet (but not a weak one). Could it be a bronze clad steel penny?