Mo. Rev. Stat. § 176.055
Notwithstanding any other provision of law, in any resolution authorizing bonds under sections 176.010 to 176.080, including refunding bonds, the governing body may provide for the initial issuance of one or more bonds (in this section called "bond") and may make such provision for installment payments of the principal amount of any such bond as it may consider desirable and may provide for the making of any such bond registrable as to principal or as to both principal and interest, and where interest accruing thereon is not represented by interest coupons, for the endorsing of payments of interest on such bond. The governing body may further make provision in any such resolution for the manner and circumstances in and under which any such bond may in the future, at the request of the holder thereof, be converted into bonds of smaller denominations, which bonds of smaller denominations may in turn be either coupon bonds or bonds registrable as to principal or principal and interest.
§ 176.055, RSMo