(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; or
(6) the interest and sinking fund or other public fund of an authority.
(b) The bonds are eligible and lawful security, to the extent of the value of the bonds, for the deposits of public funds of the state or an authority if accompanied by all appurtenant unmatured interest coupons.