Any person or persons or corporation convicted of a violation of § 1-17 or § 1-18 shall be fined the sum of $10 for the 1^st offense and $20 for every subsequent offense. Each separate sale, at public auction, of an article or articles of gold, silver, plated ware, precious stones, watches, clocks, or jewelry in violation of the preceding section shall constitute a separate offense hereunder. City Code, 1976/83, art. 2, §16 Ord. 77-494