Mo. Rev. Stat. § 541.050
Every person prosecuted under section 541.040 may plead a former conviction or acquittal for the same offense in another state or country, and if such plea be admitted or established, it shall be a bar to any other or further proceedings against such person.
(RSMo 1939 § 4838)
Prior revisions: 1929 § 4445; 1919 § 3686; 1909 § 4897