G'day & thankyou,
the ZimDollar was restructured fairly recently ... but, apparently, unsuccessfully.
quote: "The first Zimbabwean dollar was introduced in 1980 and replaced the Rhodesian dollar at par. The initial ISO 4217 code was ZWD. At the time of its introduction, the Zimbabwean dollar was worth more than the U.S. dollar, with ZWD 1 = USD 1.47. However, the currency's value eroded rapidly over the years. ...
Second dollar: The dollar was redenominated on 1 August 2006 at the rate of 1 revalued dollar = 1,000 old dollars. ... [250 revalued dollars = US$1.00]
In February 2007, the Reserve Bank of Zimbabwe declared inflation "illegal" ...
On 6 September 2007, the Zimbabwe dollar was devalued by 92%[11], to give an official exchange rate of ZW$30,000 to US$1, although the black market exchange rate was estimated to be ZW$600,000 to US$1. ...
Third dollar: On July 30, 2008, Gono announced that the Zimbabwean dollar would be redenominated. Effective August 1, 2008, ZW$10 billion would be worth ZW$1. ..."
for details, see:
http://en.wikipedia.org/wiki/Zimbabwean_dollarPeter in Oz