11. Every harp and piano in use one dollar, every dirk, bowie knife, pistol, sword-cane, dirk-cane and rifle-cane, (except arms used for musturing and police duty) used or worn about the person of any one at any time during the year, one dollar: Provided, That this tax shall not apply to arms used or worn previous to the ratification of this act, and any person who shall wear said weapons, and fail to list the same, and pay the tax, shall be guilty of a misdemeanor.