Should the fiat currency bubble busts, the government
issued paper money
will have only one good use, but it may clog up your head
Small pieces of silver will always be universally accepted. In times of madness, no one makes change. In the depression, a dime would buy a loaf of bread, but so would a silver dollar.
It makes good planning to have rolls of silver dimes stashed away to use as cash in uncertain times.
I would rather have a roll of 90% silver than a US 100 dollar bill. Silver does not need an exchange rate.
For the guy with a box full of twentys, any coin shop will exchange them for silver coins, if you hurry.