In anticipation of the issuance of the notes herein authorized, the commission may authorize and issue interim certificates payable to bearer or to the purchaser of the notes. Such interim certificates may be in such form and may contain such terms, conditions or provisions and such agreement or agreements relating to their discharge, through the delivery of the notes, as the commission may by resolution or resolutions determine.
Notwithstanding the foregoing provisions of this section, bonds referred to hereinabove may be issued pursuant to the supplemental powers and authorizations conferred by the provisions of the Registered Bond Act, being Sections 31-21-1 through 31-21-7.