On 30 July 2008, the dollar was redenominated and given a new currency code of ZWR.[21] After 1 August 2008, 10 billion ZWN were worth 1 ZWR.[21] Coins valued at Z$5, Z$10 and Z$25 and banknotes worth Z$5, Z$10, Z$20, Z$100, and Z$500 were issued in ZWR.[22] Due to frequent cash shortages and the apparently worthless Zimbabwean dollar, foreign currency was effectively legalised as a de facto currency on 13 September 2008 via a special program.