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But there is also a German company in Pforzheim in Germany, called ''Kohler & Schaefer'' which holds several patents related to fountain pens and other writing instruments, for which it is not known any relationship with the Milanese company (if the parent or other). But the possibility that these were two completely independent companies with the same name composed of two identical surnames (''Kohler & Schaefer'' also appears in the records of Italian brands) is considered very unlikely.

The Italian branch was managed by one of the two daughters of ''Christian Schaefer'' (''Margarete Schaefer'', called ''Gretel'') who successfully extended and expanded the production to include fountain pens and mechanical pencils, as well as gold and silver objects such as frames, ashtrays, special cutlery, and then jewellery such as cufflinks, earrings and pendants, some on his own brand and others for great jewelers. Another son of ''Christian Schaefer'', ''Walter Schaefer'', ran a branch (only commercial) in Argentina during the period in which he lived in that country (approximately from 1935 to 1950).