yep.
According to a study of 775 fiat currencies by DollarDaze.org, there is no historical precedence for a fiat currency that has succeeded in holding its value. Twenty percent failed through hyperinflation, 21% were destroyed by war, 12% destroyed by independence, 24% were monetarily reformed, and 23% are still in circulation approaching one of the other outcomes.
The average life expectancy for a fiat currency is 27 years, with the shortest life span being one month. Founded in 1694, the British pound Sterling is the oldest fiat currency in existence. At a ripe old age of 317 years it must be considered a highly successful fiat currency. However, success is relative. The British pound was defined as 12 ounces of silver, so it's worth less than 1/200 or 0.5% of its original value. In other words, the most successful long standing currency in existence has lost 99.5% of its value.
Given the undeniable track record of currencies, it is clear that on a long enough timeline the survival rate of all fiat currencies drops to zero.
http://georgewashington2.blogspot.co.uk ... -fiat.html
because the pound and other "old" currencies were once backed by silver or gold, you could argue that they became different currencies when they became pure, unbacked fiat currencies.
Pound sterling on Wiki
http://en.wikipedia.org/wiki/Pound_sterling
The gold standard was suspended at the outbreak of the war in 1914, with Bank of England and Treasury notes becoming legal tender. Prior to World War I, the United Kingdom had one of the world's strongest economies, holding 40% of the world's overseas investments. However, by the end of the war the country owed £850 million (£30.7 billion as of 2013),[17] mostly to the United States, with interest costing the country some 40% of all government spending. In an attempt to resume stability, a variation on the gold standard was reintroduced in 1925, under which the currency was fixed to gold at its pre-war peg, although people were only able to exchange their currency for gold bullion, rather than for coins. This was abandoned on 21 September 1931, during the Great Depression, and sterling suffered an initial devaluation of some 25%.
