Section 18-4-305 - Form; execution; payment; presumed valid(a) Bonds shall be signed by the chairman of the board of county commissioners and countersigned by the county treasurer or his deputy. Any coupons shall be signed by the county treasurer or his deputy. The county clerk shall endorse a certificate upon every bond that it is issued pursuant to law and is within the lawful debt limit of the county. The board of county commissioners may authorize another member of the board to sign any bond or certificate in place of the chairman or county clerk. It is not necessary for any bond to bear the seal of the county. Bonds and coupons shall otherwise be in such form as the board may determine. The board may utilize a statutory form of bond which shall include the following details:(i) The name of the county and the date of the bond;(ii) The principal amount thereof and interest rate or rates payable;(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 county does not exceed the lawful debt limit of the county and that the bond has been issued under the authority of, in full compliance with and for a purpose authorized by the constitution and by law.(b) A bond delivered to the purchaser 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 county under and by virtue of and in full conformity with the constitution and laws of Wyoming, any amendments thereto, and all other laws thereunto enabling; and(vi) Be incontestable as hereafter provided.(c) Any resolution of a board of county commissioners authorizing bonds may provide that each bond therein authorized shall recite that it is issued under the authority of W.S. 18-4-304 and 18-4-305. The recital shall conclusively impart full compliance with all the provisions hereof and all bonds issued containing the recital are incontestable for any cause whatsoever after their delivery for value.