From Longman Business Dictionary
coinagecoin·age /ˈkɔɪnɪdʒ/ noun [uncountableU]1ECONOMICS the system of coins used in a countryBritain did not use decimal coinage until 1971.
→ standard coinage → token coinage2money in the form of coinssubstantial amounts of silver and gold coinage
3the making of coins
→ see also debasement of coinage