Conn. Gen. Stat. § 22-208: Official seal.

The Commissioner of Agriculture may, for the authentication of his records, process and proceedings, adopt and use a seal, of which judicial notice shall be taken in all courts of the state. All acts, proceedings, orders, rulings, regulations, directions, papers, findings and other records of the commissioner and all reports or documents filed with him may be proved in any court of this state by a copy thereof, certified by the commissioner, with his seal attached thereto; and certification under seal that an order or regulation has been posted, filed and publicized as provided for herein shall constitute evidence of compliance with all formalities in respect thereto.