Section 34. The directors of such company may at any time, and from time to time, change the home office of the company; provided, that no such change shall be effective until a certificate of such change specifying the post office address of its new home office, signed under the penalties of perjury by the secretary or assistant secretary of the corporation, has been submitted to the commissioner and having been approved by him as conforming to the requirements of law with his approval endorsed thereon has been filed with the state secretary. If such company establishes agencies in other places, all signs, cards, pamphlets and advertisements exhibited or issued by it or its agents shall specify the city or town where the home office of the company is located.