O.C.G.A. § 14-2-150: Signatures.

The signatures of the officers of a corporation and the seal of the corporation upon any bond, debenture, interest coupon, or other debt security may be facsimiles if the instrument is authenticated or countersigned by a trustee or transfer agent or registered by a registrar other than the corporation or an employee of the corporation. The transfer agent or registrar may sign manually or in facsimile.