Any person, firm, corporation, association or copartnership, foreign or domestic, who or which shall violate the provisions of this section, shall be deemed guilty of a misdemeanor, and upon conviction thereof, shall, for the first offense, be fined not less than twenty-five nor more than one hundred dollars; and for a second offense shall be fined not less than fifty dollars nor more than two hundred fifty dollars, and in addition thereto, the owner, manager or acting agent of the seller shall be imprisoned in the county jail not less than ten nor more than sixty days; and upon conviction for a third or subsequent offense, shall be fined not less than one hundred dollars nor more than five hundred dollars, and in addition thereto the owner, manager or acting agent of the seller shall be confined in the county jail not less than thirty days nor more than six months, at the discretion of the court, and upon conviction for such third or subsequent offense, in addition to the penalty herein provided, the license of the offender for the sale of merchandise shall be revoked and shall not be renewed for the period of six months from the date of such third conviction, and then only upon the offender executing bond with approved security in the sum of one thousand dollars, conditioned that he or it will not violate the provisions of this section.