Del. Code tit. 2 § 1316
Bonds issued pursuant to this chapter are securities in which all state officers and officers of political subdivisions, administrative departments, boards and commissions of the State, all banks, bankers, savings banks and institutions, building and loan associations, trust companies, savings and loan associations, investment companies and other persons carrying on a banking business, all insurance companies, insurance associations and other persons carrying on an insurance business and all administrators, executors, guardians, trustees and other fiduciaries, and all other persons whatsoever who now are or may hereafter be authorized to invest in bonds or other obligations of the State, may properly and legally invest any funds, including capital, belonging to them or within their control.
Such bonds are obligations which may properly and legally be deposited with and received by any officer of the State, or of any political subdivision or agency of the State, for any purpose for which the deposit of bonds or other obligations of the State is now, or may hereafter be, authorized by law.
2 Del. C. § 1316