The commission is hereby authorized to sell, exchange, rent, lease, or otherwise manage the property represented by all mineral reservations to the State made prior to the effective date of Section 6403 of this code, as added by Chapter 227 of the Statutes of 1947, with respect to any lands of the classes specifically exempt from this chapter under the provisions of that section, other than lands acquired by the State under the provisions of the Streets and Highways Code, in such manner and upon such conditions as commissions may determine; provided, that any proceeds from the rent, lease, or other management of mineral reservations to the State made in connection with property which has been distributed or escheated to the State in connection with unclaimed estates of deceased persons shall be disposed of as provided by law with respect to other property in unclaimed estates of deceased persons. The commission shall furnish the Controller the name of the estate in connection with any money collected by the commission and transmitted by it to the State Treasury in connection with mineral reservations relating to unclaimed estates of deceased persons. The commission, through its executive officer, shall have the power to sign, on behalf of the State and the commission, all deeds, leases, agreements or other documents required in connection with the exercise by the commission of the powers vested in it by this section.