Concurrently with the filing of the declaration provided for by section 433 of this chapter, the attorney shall file with the Commissioner of Insurance an instrument in writing duly executed by him for said subscribers, conditioned that upon the issuance of a Certificate of Authority provided for in section 411 of this chapter action may be brought in the Territory, and service of process may be had upon the Commissioner of Insurance in all actions or proceedings in this Territory arising out of any policies, contracts or agreements issued, which service shall be valid and binding upon all subscribers exchanging at any time reciprocal or inter-insurance contracts through such attorney. Three copies of such process shall be served and the Commissioner of Insurance shall file one copy in his office, forward one copy to said attorney, and return one copy with his admission of service. Where the principal office of the attorney is located in this Territory, service of process may also be had upon all subscribers by serving the attorney at said office. Service of process shall not be had upon subscribers or any of them in any action or proceeding in this Territory, except in the manner provided in this section and any action or other proceeding may be begun and prosecuted or defended by them under the name or designation adopted by them. A service fee of two dollars ($2) shall accompany each such service and be paid to the Commissioner of Insurance.