English
-Papa! what's money?
-What is money, Paul? Money?
-Yes, what is money?
-Gold, and silver, and copper. Guineas, shillings, half-pence. You know what they are?
-Oh yes, I know what they are. I don't mean that, Papa. I mean what's money after all?
Little Paul Dombey, Dombey and Son, by Charles Dickens (1848)

legal tender

"For security reasons 500 euro banknotes are not accepted" (pump at gas station in Kehl, Germany).