Any article purchased or exchanged under a license issued pursuant to this chapter shall be retained by the purchaser thereof for at least fifteen days before disposing of the article, in an accessible place in the building where such articles are purchased and received. A tag shall be attached to the article in some visible and convenient place, with a number written thereupon to correspond with the entry number in the book required in Section 870.04. Such purchaser shall prepare and deliver, within forty-eight hours, to the Chief of Police, a legible and correct copy, on cards furnished by the Police Department or the State Police written in the English language, from such book, containing a description of each article purchased or received during the preceding week, the hour and day when the purchase was made and the description of the person from whom it was purchased. Such statement shall be verified by the affidavit of the person subscribing his or her name thereto. However, nothing in this section shall require the purchaser to retain articles purchased from persons having a fixed place of business after such articles are reported.