The first stamps of Sweden’s constitutional monarchy appeared in 1855, imprinted with the country’s coat of arms. From that time, the stamps of Sweden have born its name in Swedish: Sverige. The first series produced an error – the famous “Tre skilling” yellow. There is only one known to exist and the stamp has been sold for a record-breaking amount. In 1903, Sweden’s first commemorative stamp came on the scene, honoring the opening of Stockholm’s General Post Office. Sweden’s stamps are highly regarded in the stamp world for their high-quality engraving and intaglio printing. Many stamps are produced in booklet or coil format. Master Polish stamp and banknote engraver, Czeslaw Slania engraved many of Sweden’s popular stamp designs.