Bonds and notes issued under this chapter are securities in which all public officers and public bodies of the state and its political subdivisions, the New Hampshire municipal bond bank, all insurance companies, trust companies, banking associations, credit unions, building and loan associations, investment companies, executors, administrators, trustees and other fiduciaries, and pension, profit-sharing, and retirement funds may properly invest funds, including capital in their control or belonging to them. Such bonds and notes are securities which may properly be deposited with and received by any state or municipal officer or any agency or political subdivision of the state for any purpose for which the deposit of bonds or obligations of the state is now or may hereafter be authorized by law.