In the 60s, my grandmother got me interested in coin collecting. I am not even close to being a numismatist. Even coins from the 60s are starting to be 50 years old, but there were so many minted that a coin not in mint condition has little value. But still, when I pull out some change, the older-looking coins always catch my eye. Most of the the time, the coin is recent, but just dirty.
Today, I was about to slide a nickel into a soft-drink machine, but stopped to check the date. It was a 1942 D! I thought of my grandmother, who died in 1974, and slipped it into another pocket for safekeeping.
Oh, and "always check, it might be mate"? That's horrible chess advice!
Now I've truly outed myself as a nerd. Interested in math. Collected coins. And, yes, President of the Chess Club in high school.
Update: According to Cointrackers, that nickel has an estimated minimum value of $2.00. That's probably less than the inflation-adjusted value of $0.05 in 1942 vs. now. But better than a poke in the eye with a sharp stick.
Update: Added photo.