(a) Bonds issued under this chapter are legal and authorized investments for:
(1) a bank;
(2) a savings bank;
(3) a trust company;
(4) a savings and loan association;
(5) an insurance company;
(6) a fiduciary;
(7) a trustee; and
(8) a sinking fund of a municipality, school district, or any other political corporation or subdivision of the state.
(b) The bonds may secure the deposits of public funds of the state or of a political subdivision of the state. The bonds are lawful and sufficient security for those deposits in an amount up to their face value, if accompanied by all appurtenant unmatured coupons.