Any letter bearing these stamps are to be delivered directly in the hands of a person to whom it is addressed, and to no one else. Now a days this service is discontinued nearly allover the world. Many countries have special stamps for parcel post service. Uruguay, in addition to a general parcel issue, in 1929 issued a special triangular 'agricultural' or farmers' parcels' or 'produce stamp.s. Many countries have made, special issues to prepay postage on newspapers, journals, periodicals, and all printed matters.
Some countries combine newstax with postage, and thus serve as both revenue and postage stamps.
These were formerly issued by all the main line railway companies in Great Britain to pay charges on the letter handed in at station for conveyance by passenger train. They were mostly of 2d. In recent years their use has been revived by the Talyllyn Railway, the privately operated narrow gauge line in North Wales, who have issued several attractive stamps for the purpose. Some countries had issued charity stamps without postage value but these were to be fixed on every article of posting during the particular period of time e.g. refugee relief stamps of India. Many postage stamps are also valid for revenue purpose and are thus inscribeed.