The State Fiscal Accountability Authority and any other officers of the State authorized by law to issue or sell obligations of the State may, when in need of credit by loans of cash, offer to the investing public by and through such advertisement as may be deemed proper, in small denominations, bonds, notes, certificates of indebtedness or other obligations of the State, upon such terms and at such rates of interest as such board or officers may determine, not to exceed the legal rate, and payable at such intervals as such board or officers may deem proper. But no such obligations shall be sold for less than par and accrued interest to date of delivery.