The bonds, notes and other evidences of indebtedness of the agency are securities in which all public officers and bodies of the Commonwealth and all municipalities and municipal subdivisions, all insurance companies and associations and other persons carrying on an insurance business, all banks, trust companies, savings banks and savings associations, savings and loan associations, investment companies, all administrators, guardians, executors, trustees and other fiduciaries and all other persons whatsoever who are now or may hereafter be authorized to invest in bonds or other obligations of the Commonwealth may properly and legally invest funds, including capital in their control or belonging to them.