Sale of foreign currency notes to tourists at offices of authorised dealers other than their exchange bureaux operating at airports and seaports, may be made up to a limit of U.S.$ 500 or its equivalent, if required by them. Exchange bureaux functioning at airports and seaports may, however, sell foreign currency notes and coins without limit to foreign tourists and transit passengers against encashment of foreign currency travellers cheques, drafts, etc. or in reconversion of Indian currency at the time of their departure from India.(See paragraph 3E.8).