Years ago, before the Poké became standardized currency around the world, the Unovians used to call the little coins they had "quarters".

The term baffled Elio. These "quarters" had been worth around the same as a 100 Poké coin, yet they called them quarters when they were using them to play games in arcades. Why would they be quarters when they make up a tenth of a 1000 Poké note?

He theorized it was a cherished part of Unova's past, and that was why they still called them quarters even now.

If only Kanto cared as much about the past.