Section 21-13-706 - Execution, form and contents of bonds(a) Said bonds shall be signed by the chairman of the board of trustees and countersigned by the county treasurer. The coupons, if any, shall be signed by the county treasurer. The clerk of the board shall endorse a certificate upon every bond, that the same is issued pursuant to law and is within the lawful debt limit of the district. The county treasurer may authorize his deputy to sign any bond or coupon on his behalf. The board of trustees may authorize another member of the board to sign any bond or certificate in place of the chairman or clerk. It shall not be necessary for any bond to bear the seal of the district. Said bonds and coupons shall otherwise be in such form as the board may determine; provided, that the board may, at its option, utilize a statutory form of bond which shall include the following details: (i) The name of the district and the date of the bond; (ii) The principal amount thereof and interest rate or rates applicable thereto; (iii) The place or places and time or times of payment of principal and interest; (iv) The prior redemption option, if any; (v) A recital that the bond is one of a series approved at an election held for that purpose, that the total indebtedness of the district does not exceed the lawful debt limit of the district; and that the bond has been issued under the authority of, and in full compliance with, and for a purpose authorized by, the constitution and this article. (b) A bond delivered to the purchaser thereof in the optional statutory form shall: (i) Be payable in lawful money of the United States of America without deduction for exchange or collection charges; (ii) Be conclusively presumed to have been issued for value; (iii) Be payable upon presentation and surrender of the bond and the attached coupons as they severally become due; (iv) If not paid upon presentation at maturity, continue to draw interest until the principal thereof is paid in full; (v) Be presumed to have been issued by the proper officers of the district under and by virtue of and in full conformity with the constitution of the state of Wyoming, this article, any amendments thereto, and all other laws thereunto enabling; and (vi) Be incontestable as hereafter provided. (c) Any resolution of a school district board of trustees authorizing bonds may provide that each bond therein authorized shall recite that it is issued under the authority of this article. Such recital shall conclusively impart full compliance with all the provisions hereof, and all bonds issued containing such recital shall be incontestable for any cause whatsoever after their delivery for value.