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A training stamp is a label resembling a postage stamp that is used by postal authorities to train postal workers. They generally have the same size and shape as regular stamps, but with a minimal design. Alternatively, several countries have simply obliterated their regular stamps in order to make the training process more realistic, for instance Sudan and the United Kingdom.
In some cases, training stamps may be interchangeable with test stamps though test stamps do not need to have a range of values to assist with training postal workers. Although training stamps are not normally available to the general public, some have found their way into private hands, and they are a recognised stamp collecting speciality. Training stamps are a form of cinderella stamp.