Any deed of conveyance of real estate executed within or outside of the Commonwealth by a corporation of the Commonwealth or any other state to which deed the seal of the corporation was not affixed, or to which the seal was affixed but was not attested to by the secretary or by some other authorized officer of the corporation, shall be held to be valid and is hereby declared a valid and effective conveyance in every respect if otherwise valid according to the law then in force.
Va. Code § 55.1-645