Okla. Stat. tit. 62 § 411
Any county, city, town, township, board of education, school district, or any other municipal corporation in this state, whether operating under the provisions of a special charter or otherwise, is hereby authorized and empowered to issue its general obligation bonds for the purpose of funding any or all of its matured and outstanding special assessment obligations and the interest and/or penalties thereon, lawfully assessed against any such municipal corporation for the payment of special improvements and for which such special assessments levies have been made by such municipality, but for which there are not sufficient funds on hand with which to pay such special assessment obligations. Said bonds may be sold for not less than par and accrued interest in the manner now or hereafter provided by law for the sale of other bonds of such municipalities, or any of them, and the proceeds of said sale shall be applied to the payment of the special assessments, interest and/or penalties, to be funded. If said bonds are offered for sale, and no legally accepted bids are received at said sale, the county, city, town, township, board of education, school district, or other municipal corporations issuing such bonds, may, in its discretion again offer such bonds for sale. Said bonds shall bear interest at any rate not exceeding six percent (6%) per annum and shall mature serially in equal installments beginning not less than three (3) nor more than five (5) years after the date of said Bonds and shall be in denominations of Fifty Dollars ($50.00) or any multiple thereof; provided, however, the last maturing installment and/or the last bond of the last maturing installment, may be for such sum less than two installments as will complete the full issue of such bonds, notwithstanding the necessity of varying the amount thereof to complete the same. Such bonds shall in no event be delivered to the purchaser thereof except upon simultaneous payment therefor at par and accrued interest to the date of said payment and the treasurer of any such municipality shall immediately upon delivering said bonds and being paid therefor, proceed to pay to the proper officer, the special assessment, interest and/or penalties which said bonds were issued to fund and he shall procure a receipt therefor showing all of such matured special assessments and the interest accumulated thereon to the date of payment, as being paid in full. If any of the purchase money derived from the sale of the bonds is left in the hands of the treasurer after the payment of such special assessments, interest and/or penalties, the same shall be credited to the sinking fund created for the payment of said bonds, however, nothing herein shall be construed to authorize the issuance of bonds in an aggregate face amount greater than the total amount of matured outstanding special assessments, interest and/or penalties, to be funded. Nor shall any such bonds issued hereunder extend any lien upon or create any liability against any property not liable therefor under existing or prior bonds.
Okla. Stat. tit. 62, § 411