Another idea is this. Whenever currency is exchanged for a new one, they never exchange coinage because of the cost. So if we went to a gold-based currency and prices rolled back to 1913 levels, the exchange rate would be approximately 100 old dollars for 1 new dollar. That means all of your coins would be suddenly worth 100 times more. So I have a crapload of coins. I also have pre-1982 copper pennies and nickels, because of the current high melt value. But that may change if we go to a gold standard.