On December 6th, 2005, the collateral supporting the following Series of Citibank Omni-S Certificates was substituted with Floating Rate Bonds issued by the International Bank for Reconstruction and Development (The World Bank), and/or cash. The effect of this substitution was the defeasance of the listed Series of Citibank Omni-S Certificates and the release of the related credit card assets. The defeasance collateral is sized to cover principal when due and pre-fund all future interest payments. Interest earned on investments in the principal funding account is included in calculating the amount of pre-funded interest required. For more information, please see the Citibank Omni-S Master Trust SEC filings or contact Andrew Lubliner, Vice President, Treasury Operations at (718)248-5134.