Koenig & Bauer AG is a German company that makes printing presses based in Würzburg. It was founded by Friedrich Koenig and Andreas Friedrich Bauer in Würzburg in 1817, making it the oldest printing press manufacturer in the world still in service. 95% of the banknotes used in the world are printed on printers made by Koenig & Bauer Banknote Solutions SA, a division of Koenig & Bauer. Wikipedia