Mo. Rev. Stat. § 307.155
307.155 Violation a misdemeanor.
307.155. Violation a misdemeanor. — Any person violating any of the provisions of sections 307.130 to 307.160 shall be deemed guilty of a class C misdemeanor and shall be punished by a fine of not to exceed fifty dollars for each offense.
(RSMo 1939 § 8393, A.L. 1996 H.B. 1047, A.L. 2009 H.B. 683, A.L. 2010 H.B. 1540)