for those follwing my hyperinflation comments please note that Iran is a perfect example of a currency that might hyperinflate
it fits the criteria of not being widely traded outside the country, people would rather hold other currencies other than their own, the countries debts are mostly denominated in USD or Euro
Now they face an income shock where their external income sources will collapse, what do they do?
One answer would be to sell gold another would be to create a gold backed currency, the trouble they have though is that even if the currency is gold backed it wont be able to be traded in nearly any market in the world