No person authorized to administer oaths, shall be allowed to charge any discharged soldier or seaman, or widow, orphan or legal representative thereof, any fee for administering any oath or the giving of any certificate for the procuring of any pension, bounty, or back pay, nor for administering any oath or oaths and giving the certificate required upon any voucher for collection of periodical dues from the pension agent for any services rendered in perfecting any voucher; and any such officer who may charge any fee for any such services shall be deemed guilty of a misdemeanor, and fined in any sum not less than Ten Dollars ($10.00) nor more than Twenty-five Dollars ($25.00).