Each commercial motor vehicle except those licensed under the provisions of section 301.057 or 301.058 based on a gross weight of thirty-six thousand pounds or less and which are not regularly used for actual commercial purposes shall have displayed thereon in a conspicuous place:
§ 301.330, RSMo
RSMo 1939 § 8369, A.L. 1943 p. 663, A.L. 1945 p. 1194; RSMo 1939 § 8377, A.L. 1947 V. I p. 380; A. 1949 S.B. 1110, A.L. 1951 p. 695, A.L. 1965 p. 473, A.L. 1975 H.B. 95, A.L. 1988 S.B. 686, A.L. 1996 S.B. 792