The oldest evidence that beer was brewed in Germany comes from around 800 B.C. By the second century, beer was being traded commercially in Germany. In 1516, Duke Willhelm IV of Bavaria enacted the Reinheiitsgebot, or the "Purity Law", which regulated the brewing of beer in Germany. The town of Solingen, known as the cutlery center of Germany, also enacted strict laws for the manufacture of knives and shears. While Boker is not quite as "aged" as the brewing industry, the same quality standards apply. To commemorate this common interest Boker is introducing a series of traditional pocketknives with handles made from Genuine German ale/beer barrels, handcrafted in the Solingen factory. Each pattern will include solid nickel silver bolsters, brass liners, carbon steel lades and the resurrected old Tree Brand blade etching. The famous knives with the tree-brand have been manufactured in the German blade-city since 1869. Since then, no knife has left Boker production without a sign of quality. The history of Boker has been affected by eventful times, but two things remained: passion and enthusiasm for extraordinary knives. Today, Boker is renowned all over the word as manufacturer and supplier of an unmatched variety of blade and handle materials and biggest manufacturer in Europe for Sport Knives, Tactical Knives and Collector's knives.