a supranational currency imagined by Keynes between 1940–1942 and which the UK proposed to introduce after WWII; it could then be used in international trade as a unit of account within a multilateral clearing system—the International Clearing Union—which would also have to be founded
The key role played by this new international central bank – the ICU – would be to manage flows of money between states, and to use a new currency, bancor, as the relevant currency. (In other words, a neutral currency, not the currency of one imperial power.)