Established in 1834 by Jakob Knewitz, this family-owned firm is still in business today.
Jakob's son, Fritz, opened a silverware manufactory and was a supplier to the Russian Court. He was entitled to use the term 'Hofjuwelier für Hessen-Darmstadt'
Lazarus Posen Witwe (Widow) of Frankfurt and Berlin. Lazarus Posen was a Jewish silversmith, after his death in the 1860s, his widow Brendina founded what became a well-known maker and supplier of well-crafted silver, including many museum-quality pieces of Judaica. The simple sans-serif "POSEN" seems to be a later mark, probably used after the turn of the century. The company seems to have vanished sometime in the 1930s.