Iraqi Dinar Discussion Board

[Aerospace]

Yep. Pretty much.
All the private banks are required to have a certain amount cash as reserves. I'd guess that a lot of those bank reserves are kept at the CBI for security reasons. That currency is part of the money supply.
But cash the CBI has, as long as they have it, it's not part of the money supply. When currency is printed up, piled onto a pallet, and delivered to the central bank, it's not part of the money supply until they issue it.