Photo Via Flickr
Coin of the Realm is a country's currency.
Noun.
The legal money of a country.
The coin of the realm changes from one country to the next, so travelers may turn to digital transactions through services like PayPal.
The Declaration • June 4, 2019 • https://thedeclarationatcoloniahigh.com/41095/wordoftheday/coin-of-the-realm/
Coin of the Realm