During such hours as the Postmaster General may prescribe, letters, letter cards, postcards of packets intended for dispatch by any mail may be presented at the window of the Post Office, Railway Mail Service Office or Section except on Sundays when unregistered letters, letter cards, postcards or packets may be posted in special letter boxes provided for the purpose in Departmental Telegraph Office, selected combined offices and Railway Mail Service Officers or in letter boxes or provided in Railway Mail Service. Sections, and registered newspapers or packets of registered newspapers may be accepted in offices specially authorised by the Postmaster General in this behalf.The articles so presented or posted shall be accepted for dispatch by inland or foreign post if the postage and fee required by or under Rule 197 have been prepaid.Provided that no late fee shall be chargeable on registered news-papers or packets of registered newspapers accepted for posting on Sundays by offices, specially authorised by the Postmaster-General.
