Section 13
Sec. 13. When a person holding a valid license for the possession of any firearm or firearms and the ammunition therefor shall change his domicile from the city of Manila to a province or from a province to the city of Manila, or from one province to another, he shall, within ten days thereafter, notify the Director of Constabulary of such change by registered mail, or he shall notify the senior inspector of the province in which he takes up his new domicile, or the chief of police of the city of Manila, as the case may be, and the said senior inspector or chief of police, as the case may be, shall transmit such information to the Director of Constabulary. Violation of the provisions of this section may be punished by the revocation of the license, in the discretion of the Governor-General.