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German company, based in Pforzheim. Founded in 1900<ref>for the date we take as reference [http://www.fountainpennetwork.com/forum/index.php?/topic/228874-could-someone-tell-me-anything-about-this-pen this FPN thread] and not the 1899 mentioned by other sites and by the Lambrou book.</ref> it is known for metal working.  It is also known for the production of pens with high quality [[overlay]] in rolled gold metal or silver, which were also used by other manufacturers for their models. It is also believed to be the producer of most [[overlay]]s used by [[Montblanc]] in the '20s and '30s.

German company, based in Pforzheim. Founded in [[1900]]<ref>for the date we take as reference [http://www.fountainpennetwork.com/forum/index.php?/topic/228874-could-someone-tell-me-anything-about-this-pen this FPN thread] and not the 1899 mentioned by other sites and by the Lambrou book.</ref> it is known for metal working.  It is also known for the production of pens with high quality [[overlay]] in rolled gold metal or silver, which were also used by other manufacturers for their models. It is also believed to be the producer of most [[overlay]]s used by [[Montblanc]] in the '20s and '30s.