I keep copper pennies from my change when in in the US. I kept a few rolls of Canadian copper pennies before they removed them from circulation. And buy little coper souvenier tokens sometimes on holidays. But don't really say that I "stack" copper.
I keep copper pennies from my change when in in the US. I kept a few rolls of Canadian copper pennies before they removed them from circulation. And buy little coper souvenier tokens sometimes on holidays. But don't really say that I "stack" copper.