It seems like the only reasonable RV would be 1:1. My understanding is that the Iraqi's prefer and use US currency. They have been using the dollar for a long time so they probably understand denominations, the purchasing power of such notes and their value in the market place. It seems that the government would lesson society learning curve by going with 1:1, It seems that 1:1 would be a nice round number and a lot easier to calculate than 1:86 but I guess we will have to find out.