Removing Cover Cricket Bat

Overlays
WHY?

Hello everyone, today I will introduce you to the wonderful world of double exposures and other unique markings affixed postage stamps.

Overlays has been around as long as philately. They consist changes in the original stamp by the addition of text or numbers, emblems or markings on existing issues. The method just be manual, stamped or overprinted.

There are different types, the most common are those that change the par value of the stamp base, called "overload" to use the materials in hand when a price change.

There are also "overlays" that comprise most of the other types of printing the stamps. These exist for various reasons, such as: changing nation, the occupation by the armed forces, the annexation of the country by another, the independence of a country, to commemorate special events, adding taxes, the private overlay (sometimes for the same reasons that the use perfins ), changing the type of use of the sticker, propaganda, the official use by governments, the use of postage stamps in colonies, opening offices abroad, etc..

Finally, the third category, also called the "PO . ', That is to say, pre-franked used to send the "number" of mail, and this, in order to maximize the treatment of this large flow of e-mail (magazines, newspapers, advertising , etc.).

There is also a stamp term "mixed" because it has more than one category of change. Obviously, as in other areas of philately, there are errors, peculiarities and varieties.