Any person violating the provisions of this chapter shall be deemed guilty of a misdemeanor and, upon conviction, shall be fined not less than ten dollars nor more than one hundred dollars or imprisoned for not less than ten days nor more than thirty days. For any second or subsequent offense, a fine of not less than twenty-five dollars nor more than three hundred dollars or imprisonment for not more than six months may be imposed in the discretion of the court. "Subsequent offense," as used in this section, shall mean an offense committed within ten years of a previous offense.