The overwhelming majority of pennies are not rare, even if they were abolished. There would be many millions (billions?) of coins which aren't really good for m

The overwhelming majority of pennies are not rare, even if they were abolished. There would be many millions (billions?) of coins which aren't really good for much except the material they are made from. Even if you had the time to inspect every penny you planned to melt to see if it was worth something meaningful, the return you'd see would likely not even begin to cover the time you'd spent looking through all those pennies. Unless you had a machine (which costs money) a few hundred dollars is unlikely to make the effort profitable.