Although they're meant to hold pocket change, vintage piggy banks can be worth some serious money. If you're out thrifting, ...

Chances are you had a piggy bank as a kid. You know, the kind with a coin slot on top and a cork on the bottom. Or maybe it was a plastic machine that sucked up dollar bills, ATM-style.

The modern concept of the “piggy bank”, first popularised in the United States in the early 20th century, has a lot to do with this reputation. But even the direct connection between pigs and ...