The treasurer, if any, shall have custody of and shall disburse all moneys belonging to the town government subject to the provisions of this charter and ordinances enacted thereunder; shall have custody of all investments and invested funds of the town or in possession of the town in a fiduciary capacity, and shall keep a record of such investments, and shall have custody of all bonds and certificates of town indebtedness including such bonds and certificates unissued or cancelled, and the receipt and delivery of town bonds and certificates for transfer, registration, or exchanges.