An airmail stamp is a postage stamp intended to pay either an airmail fee that is charged in addition to the surface rate, or the full airmail rate, for a piece of mail to be transported by air.
Airmail stamps should not be confused with airmail etiquettes, which are affixed to mail as an instruction to the postal authority that the mail should be transmitted by air.
Famous quotes containing the word stamp:
“I look around me and nowhere do I see a stamp of disapproval with which nature marked a woman’s candid brow.”
—Franz Grillparzer (1791–1872)