The Court or Police Magistrate who convicts any person of any criminal offense shall declare as forfeited and confiscated any gun, pistol, firearm, switch-blade knife, or other dangerous weapon which was in the possession of the person at the time of committing the offense and which either was used or held for possible use in connection with the offense. The said weapon shall be turned over to the Police Department of Baltimore City for disposal and shall not be treated or considered as the property of the person so convicted. City Code, 1966, art. 19, §15 1976/83, art. 19, §17 Ord. 56-530