In addition to any other assignment permitted pursuant to this Section 9.6 any Purchaser may assign, pledge and/or grant a security interest in, all or any portion of its Notes, the other Obligations owed by or to such Purchaser, and its Physical Notes, if any, to secure obligations of such Purchaser including, without limitation, any Federal Reserve Bank as collateral security pursuant to Regulation A of the Board of Governors of the Federal Reserve System and any operating circular issued by such Federal Reserve Bank; provided , no Purchaser, as between Company and such Purchaser, shall be relieved of any of its obligations hereunder as a result of any such assignment and pledge, and provided further , in no event shall the applicable Federal Reserve Bank, pledgee or trustee be considered to be a "Purchaser" or be entitled to require the assigning Purchaser to take or omit to take any action hereunder.