Every person operating a wholesale or retail establishment in the State which sells Japanese textile goods, or garments made therefrom, shall display in a conspicuous place upon the doors of such establishment, in letters not less than four inches high, a sign reading as follows: "Japanese Textiles Sold Here." Any person violating the provisions of this section shall be guilty of a misdemeanor and upon conviction thereof shall be fined not more than one hundred dollars or imprisoned for not more than thirty days.