The State Treasurer shall act as fiduciary for any towns consolidated under the provisions of this chapter. He or she shall determine the bonds of the consolidating towns outstanding, shall give written notice to the consolidated town not less than 30 days before each due date of interest and principal due to be paid by such consolidated town, and shall bill and collect each amount so notified. Funds so collected shall be held by him or her and applied only to the payment of such bonds or of bonds of the consolidated town issued in exchange therefor. (Added 1963, No. 146, § 9.)