Section 32-11-561 - Payment of interim debentures(1) Except as otherwise provided in section 32-11-559, the proceeds of taxes, pledged revenues, and other moneys, including without limitation proceeds of bonds to be issued or reissued after the issuance of interim debentures, and bonds issued for the purpose of securing the payment of interim debentures, or any combination thereof, may be pledged for the purpose of securing the payment of interim debentures. But the proceeds of taxes and the proceeds of bonds payable from taxes, or any combination thereof, shall not be used to pay any special obligation interim debentures, nor may their payment be secured by a pledge of any such general obligation bonds, except as otherwise provided in section 32-11-559.(2) Any bonds pledged as collateral security for the payment of any interim debentures shall mature at such time as the board may determine, except as otherwise provided in section 32-11-551.(3) No bonds pledged as collateral security shall be issued in an aggregate principal amount exceeding the aggregate principal amount of the interim debentures secured by a pledge of such bonds, nor shall they bear interest at any time which, with any interest accruing at the same time on the interim debentures so secured, exceeds seven percent each year.L. 69: p. 781, § 103. C.R.S. 1963: § 89-21-103.