In practice, however, the old currencies virtually disappeared by the end of January.
The reality is that in economic terms, countries have already abandoned their old currencies.
The old currency is no longer legal tender as of 31 December 2007.
As Ireland changed over from the old currency of £.
The old currency is often not worth exchanging for new.
The pound sterling is the world's oldest currency still in use.
Banks are supposed to change their customers' old currency for the new without charge.
December 31, 2001 was the last day for electronic payments in the old currencies.
By the end of the month few people in the Eurozone will still be using the old national currencies.
Every consumer will have only one conversion rate from his or her old national currency to the euro.