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Should I stockpile nickels?
At one point it was illegal to melt silver coins in the US, but it is legal now.  I don't know that will happen with copper coins, but that's what happened with silver coins. Accumulating nickels and leaving them as-is (in their spendable state) is legal.  It's also a way to take physical ownership of copper. I expect to see more sales of nickels based on weight.  People are already selling high-copper-content cents on eBay, by weight.  There are machines in production that sort the zinc ones from the copper ones.  Gresham's Law has small business backing. ;) Copper cents are already worth twice their face value in the copper content.  Nickels will get up there, too. They are awfully heavy and bulky relative to their value, though.  Precious metals give you better bang for your ounce.