philately Philately (; ) is the study of postage stamps and postal history. It also refers to the collection and appreciation of stamps and other philatelic products. Philately involves more than just stamp collecting or the study of postage; it is pos ...

, the term conjunctive use refers to the simultaneous use of different types of postage stamps to pay separate parts of a postal charge on the same letter. Examples include the addition of an adhesive postage stamp to an item of

postal stationery A piece of postal stationery is a stationery item, such as a stamped envelope, letter sheet, postal card, lettercard, aerogram or wrapper, with an imprinted stamp or inscription indicating that a specific rate of postage or related se ...

already bearing an

imprinted stamp In philately, an imprinted stamp is a stamp printed onto a piece of postal stationery such as a stamped envelope, postal card, letter sheet, letter card, aerogram or wrapper.Carlton, R. Scott. ''The International Encyclopedic Dictionary of ...

to pay additional postal charges such as

airmail Airmail (or air mail) is a mail transport service branded and sold on the basis of at least one leg of its journey being by air. Airmail items typically arrive more quickly than surface mail, and usually cost more to send. Airmail may be th ...

or registration charges, or the part transport of mail by a local postal service. Such covers are known as ''conjunctive covers''.

References

External links

American Pony Express covers showing payment of the postal charge through the use of Pony Express and U.S. postage stamps on the same letter.
{{Philately-stub Philatelic terminology