New money (4)
'new money' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for euro that I've seen before include "The Vatican's currency" , "Continental purchaser" , "Foreign currency" , "International currency unit" , "wallaroo" .)
(Other definitions for mint that I've seen before include "Produce coins" , "Vast sum of money" , "Coin-making facility" , "Coinage producer" , "Aromatic plant; as new" .)
(Other definitions for crypto that I've seen before include "closet" , "Prefix denoting hidden or obscure" .)