Answer: seignorages

AnswerCrossword Clue
seignoragesThe Crown's right to a percentage on bullion brought to a mint for coining
seignoragesProfit made by a government by issuing currency, esp. the difference between the face value of coins and their production costs
seignoragesSEIGNORAGE, a government revenue from the manufacture of coins calculated as the difference between the monetary and the bullion value of the silver contained in silver coins
seignoragesA thing claimed by a sovereign or feudal superior as a prerogative