Mo. Rev. Stat. § 265.110
If any quantity of any agricultural product shall have been inspected and a certificate issued hereunder showing the grade, classification, quality or condition thereof no person shall represent that the grade, classification, quality or condition of such product at the time and place of such inspection was other than as shown by such certificate. Whenever any standard for the grading or classification of any agricultural product becomes effective under this chapter, it shall be unlawful in or in connection with any transaction or transactions involving such product in commerce subject to the jurisdiction of this state or in any publication in this state of a price or prices for or in connection with such transaction or transactions for any person to indicate the grade of any agricultural product which is of or within the grades fixed in said standard for such product by any name, description or designation or any system of names, descriptions or designations not used in said standard. Whenever any standard for a container for an agricultural product becomes effective under this chapter, no person thereafter shall manufacture for commerce within the jurisdiction of this state, or sell, ship, or offer for sale in such commerce any container, either filled or unfilled, to which the standard is applicable which does not comply with such standard subject to such tolerances as may be permitted under this chapter. Any person violating this section shall be guilty of a misdemeanor and upon conviction thereof shall be fined not less than twenty-five dollars or not more than one hundred dollars.
§ 265.110, RSMo