The Hidden History Behind Coin Ridges Why Those Tiny Grooves Still Protect Your Money
Why Coins Have Ridges Around the Edges — The Surprising History Behind a Tiny Detail You’ve probably handled thousands of coins without ever noticing the tiny ridges running along their edges. Quarters slide across checkout counters. Dimes disappear into cup holders. Loose change rattles around in drawers and pockets until the details become almost …









