The Secret Behind Those Tiny Ridges on Coin

pocket change jingling in your coat remains tied to a three-hundred-year-old game of cat and mouse between clever thieves and brilliant mint masters.

The next time you pull a quarter out of your coin jar, pause for a second. Press your thumb against that serrated edge. Feel that sharp, rhythmic texture. You are holding a tiny piece of crime-fighting engineering that rescued commerce and built the foundation of honest trade.

 

There’s more to discover. Continue to the next page for the rest of this article.