The seal of the court need not be affixed to any proceeding therein, or document except:
(1) To a writ.
(2) To the certificate of the probate of a will, or of the appointment of an executor, administrator or guardian.
(3) To the authentication of a copy of a record or other proceeding of a court, or of an officer thereof, or of a copy of a document on file in the office of the clerk.