Mo. Rev. Stat. § 532.090
532.090 To be under seal of court.
532.090. To be under seal of court. — All such writs issued by a court shall be under the seal thereof; and if issued by a judge out of court, they shall be signed by such judge.
(RSMo 1939 § 1596) Prior revisions: 1929 § 1432; 1919 § 1882; 1909 § 2447