Upon the application of the holders of registered bonds of the State of Oklahoma issued pursuant to the provisions of this act, and upon presentation of such bonds at the office of the State Treasurer, he, the State Treasurer, is hereby authorized to transfer the same on the books of the state to such persons or corporations as may be designated in the application. The transfer of said bonds shall be written or printed on the back of the bonds and shall be acknowledged before a notary public or other officer authorized under the laws of this state to take acknowledgments to deeds or transfers of real estate, or the signatures of the registered holders of the bonds shall be attested by the fiscal agent of the State of Oklahoma, in the City of New York. Application for transfers must be filed in the office of the State Treasurer at least fifteen (15) days before the date of payment of the semiannual interest next due on the bonds. Nothing in this act shall prohibit the use of registrars, agents, central depositories or financial intermediaries as provided in the Registered Public Obligations Act of Oklahoma.¹