Postmark
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A postmark is a postal marking made on an envelope, parcel, postcard or the like, indicating the place, date and time that the item was delivered into the care of a postal service, or sometimes indica
Postmark used on U.S. Navy ship
Austrian stamp and postmark
An early example of a Bishop mark.
One of several types of postmarks found on Pony Express mail
Cancellation (mail)
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A cancellation is a postal marking applied on a postage stamp or postal stationery to deface the stamp and to prevent its reuse. Cancellations come in a huge variety of designs, shapes, sizes, and col
Postmark
…the care of a postal service, or sometimes indicating where and when received or in transit. Modern postmarks are often applied simultaneously with the cancellation or killer that marks postage stamps as having been used. Sometimes a postmark alone is used to cancel stamps, and the two terms are often used…
Numeral 70 identifying Boyle, diamond bars for Ireland
Hand stamp of the type used to cancel postage stamps
1929 machine cancellation used to cancel 1d stamp on first flight cover from Nassau to Miami
An 1851 U.S. stamp with a pen cancellation