Tête-bêche - Errors, freaks and oddities
Tête-bêche is a joined pair (or several stamps) in which one is upside-down in relation to the other, produced intentionally or accidentally. Like any pair of stamps, a pair of tête-bêches can be a vertical or a horizontal pair. During the printing of stamps for booklets, the pages of stamps are usually printed in multiples from a larger printing plate. This can result in tête-bêche pairs. It is unusual for these pairs to find their way into the postal system, as they are cut into individual booklet pages before binding into the distributed booklet.