The phrase "a permanent currency" is correct and usable in written English.
It can be used when discussing a type of currency that is intended to remain in use indefinitely, without plans for replacement or discontinuation.
Example: "The government has decided to issue a permanent currency that will not be subject to inflationary pressures."
Alternatives: "an enduring currency" or "a lasting currency".
Once one country leaves, however small, the fiction that it is a permanent currency union is exposed.
After the Revolutionary War and the United States had won its independence, there were many things the new country had to put in order to function as a country, one of which was adopting a permanent currency.
And the people actually called these small pieces of chopped-up coins "bits". After the Revolutionary War and the United States had won its independence, there were many things the new country had to put in order to function as a country, one of which was adopting a permanent currency.
In a speech last week he warned that lack of reform could create a permanent divergence within the currency union, which would have "potentially damaging consequences for us all".
SEOUL — South Korea is proposing that central banks set up a permanent arrangement for foreign-currency swaps to help address the type of funding shortages that emerged during the global financial crisis.
In attacking the Fed, Mr. Perry was repeating a sentiment often heard by Tea Party activists and other conservatives worried about a permanent weakening of the American currency.
Instead, E.U. leaders are expected to agree to a small change to the Lisbon Treaty, which was adopted to strengthen the bloc, to create a permanent bailout fund for the currency after 2013.
The U.S. Federal Reserve chairman, Ben S. Bernanke, who is among the officials scheduled to speak at the meeting, has opposed currency swaps as a "permanent service," seeking instead to pressure banks into better managing their funding needs across different currencies.
When this happens, the original Bitcoin will probably change from a speculative crypto-currency to a permanent TCP-IP platform.
When European Union members switched to the euro, their old currencies were fixed at a permanent exchange rate to the new euro.
Since the introduction of the single European currency, the country has witnessed a permanent drop of about seven percentage points in interest rates paid on its huge debt.
