Proof stamps are stamps without face value used for internal purposes such as testing stamping equipment, developing new production methods, and training postal workers. They are also used to produce proofs of new stamp designs and colors. Test stamps are used to test stamp printing machines and other aspects of stamp making. Practice stamps are the same size, weight, and texture as regular stamps and are used to stand in for real postage.
A proof stamp is a stamp intended for internal use only, with no face value. Proof stamps cannot be placed on mail as postage. They are used to develop new production methods, test stamping equipment and train postal workers. Like other stamps, proof stamps are also items of interest to collectors and are a popular item with some collectors because they can be difficult to obtain and can also be used to trace the history of new stamp designs and production methods.
In terms of stamp equipment testing, test stamps are used when postal authorities test new stamp printing machines, and also in the development of new stamp printing methods. They are also used to experiment with stickers and other aspects of stamp making. The machines that apply or dispense the stamps are classically tested with test stamps as well, because the post office doesn’t want to waste real stamps during testing, but wants to make sure that these machines are working properly.
Proof stamps are also used for proof proofs, in which the post office wants to produce proofs or proof versions of stamps with new colors and designs. This is done to refine the colors before they are applied to the actual stamps. While most proof stamps have relatively simple designs, proof proofs can have elaborate and ornate designs because the proof stamp is used to develop new designs and colors for real stamps.
A typical proof stamp will be marked in some way to indicate that it is a proof stamp and that it is not valid postage. These stamps may also be specially made in colors not used by the Post Office so that they can easily be identified as invalid postage if they are affixed to the mail. This can happen by accident, such as if a roll of proof stamps is left in a stamp dispenser, or on purpose, if someone unscrupulous wants to avoid paying postage and has obtained proof stamps.
Also known as a training stamp or dummy stamp, a practice stamp is the same size, weight, and texture as a regular stamp. It is designed to look, act and feel like a conventional postage stamp so that it can stand in for real postage. Using test stamps of different configurations could cause problems with the calibration of postal equipment, as changes in the paper, adhesive or inks used can change the behavior of a stamp on a printing press or mail dispenser. stamps.
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