But the other week I did pay for something at a grocery store with cash and received my change from those automated coin change machines. I didn't notice right away but later that night I saw that two of the pennies were unique. One was an older wheat penny, which I always keep and are becoming less common. The other was clearly not a penny, at least not a US one. It was a 1830 German penny - or pfennig. A 182 year old coin! Given as change. Wow... to think of the journey this coin has traveled over the past 19 decades! Maybe I should use cash more often.
Here's a short video on it: