Cancellation
Also: cancel, CDS, obliteration
Cancellation is a mark applied to a stamp by a postal service or collector to prevent it from being reused.
Glossary Term
Cancelled to order (CTO) stamps are stamps cancelled by a postal authority without ever being used on mail, usually in bulk for sale to collectors below face value.
Also known as: CTO, canceled to order, remainder cancel
Cancelled to order, almost always abbreviated CTO, describes stamps that a postal administration has cancelled without them ever carrying mail. They are cancelled deliberately — often by the sheet — and sold to stamp dealers and packet makers, frequently at a discount to face value. To the untrained eye, a CTO looks like a used stamp; to a collector, the difference matters.
Postal authorities or their agents apply a cancellation to stamps that are still in sheets or panes. Because the stamps are cancelled flat, before they have been separated or stuck to envelopes, the cancel is often:
The most reliable clue is on the back. A genuinely used stamp has normally been stuck on an envelope and later soaked off, removing the gum. A CTO has never been stuck down, so it often retains its full original gum under a clean-looking cancel. Other clues include:
CTOs have been produced by many countries. During the Cold War, several Eastern Bloc postal administrations sold vast quantities of CTO stamps to Western dealers as a source of hard currency. Many smaller nations and territories whose issues were produced mainly for collectors did the same. As a result, CTOs make up a large share of the cheap “used” packets sold to beginners.
CTOs are not forgeries — they are genuine stamps with genuine cancellations — and there is nothing wrong with collecting them, particularly for thematic collections. However, a collector building a serious used collection should distinguish them from postally used copies, which are almost always scarcer and more valuable. When a catalogue gives a used price, check its notes to see whether that price applies to CTO or postally used copies.
Typical signs include a neat, perfectly positioned partial cancel on the corner of the stamp, full original gum on the back, and a cancellation that is identical across many copies of the same issue. Genuinely used stamps normally have lost their gum when soaked off paper.
Usually, yes. Because they were produced for the collector market in quantity, CTOs of most issues sell for a fraction of the price of genuinely postally used copies. Catalogues sometimes price them separately or note when used prices apply to CTOs.
Selling cancelled stamps to dealers generated income without the post office having to carry the mail, and it disposed of remaining stock. Several Cold War Eastern Bloc administrations and many smaller stamp-issuing nations sold large quantities this way.
Also: cancel, CDS, obliteration
Cancellation is a mark applied to a stamp by a postal service or collector to prevent it from being reused.
Also: stamp gum, adhesive, OG, PVA gum, dextrin
Gum is the adhesive applied to the back of a stamp so it can be stuck to mail; its presence, type and condition strongly affect the value of mint stamps.
Also: postally used, fine used, FU, cancelled
A used stamp has been cancelled after carrying mail through the postal system, typically showing a postmark or other cancellation.