Thus the fund enjoys the seigniorage of the currency notes .

外汇基金则享有铸币收益。

And the public purse gets a second boost from seigniorage , the difference between the value of the coins and the cost of producing them .

同时，国库也从硬币铸造税种得到了第二笔收入，这既不同于硬币的价值也不同于生产硬币的成本。

That is where seigniorage comes in .

铸币税就在这里发挥作用。

This profit , known as seigniorage , is one of the great hidden sources of government revenue .

这种利润，被称为铸币税，是政府重大的潜在收入来源之一。

The ecb 's gains from seigniorage are becoming increasingly important this year .

今年，欧洲央行从铸币税中获得的利益正变得越来越重要。