It would depend on what they give you for them when you turn them in.
If they give you 25 thousand in smaller denomination then it wouldn't reduce the money supply one single dinar.
If they only give you 25 dinar, then it's a lop, and believe me, they will lop ALL denomination, not jus the 25Ks.
Do you think they will screw everyone holding 25Ks and tell people that have 10Ks that they hit the lottery?
Dow Jones Newswire: A current 25,000 Iraqi dinar banknote will become IQD25, and a dollar will equal only 1.17 dinars.