ARROW BLOCK:A block of four stamps with lines forming an arrow pointing to the perforations between the stamps. These lines were put there to indicate the place to set the perforations.
AUCTIONS: The practice of selling to the highest bidder.
ADHESIVE : Indicates a Stamp with a gummed back , rather than an envelope or post card with the stamp printed on.
AEROPHILATELY : The collecting of air mail items.
AIR MAIL : Mail that is sent by air, to speed delivery.
ALBINO : The result of printing a stamp in a press with no ink, it leaves only an impression.
