Pin trading has taken over the Olympics. Here's what it's like in Milan

Pin trading has become a hallmark of the Olympics in recent decades — and not just for athletes. An official trading center in Milan was a hotspot for longtime collectors and curious newcomers alike.(Image credit: Rachel Treisman)

Pin trading has become a hallmark of the Olympics in recent decades — and not just for athletes. An official trading center in Milan was a hotspot for longtime collectors and curious newcomers alike.

(Image credit: Rachel Treisman)