Section 507 - Monthly report(a) Notwithstanding any of the provisions of this chapter, every importer of alcoholic liquors licensed by the Commissioner shall make a report to the Commissioner every month, in the form that the Commissioner determines, which report shall contain an exact return of the gross amount of each variety of alcoholic liquors bought by the importer and alcoholic liquors sold within this State during the preceding calendar month. The Commissioner may require such returns to be certified under oath or affirmation of the holder of the license, or of such other person approved by the Commissioner. (b) Any importer who fails to make a return to the Commissioner within 15 days following the expiration of any calendar month for which it should be made shall be fined $50 per day for each day's delay counting from the expiration of said 15 days, and the license of such importer shall be suspended by the Commissioner if the return is not made within 15 additional days.38 Del. Laws, c. 18, § 15; Code 1935, §§ 6144(5)-(8); 4 Del. C. 1953, § 507; 59 Del. Laws, c. 107, § 16; 72 Del. Laws, c. 486, § 9.;