John R. is spot on.

Waffen Schumacher, Josef-Schregel-Str. 45a, 52349 Düren has been in business since 1903

Tel.: ++49 2421 / 941194
info@waffen-schumacher.de

- just in case you want to ask if there is any record of the import. Importers usually bought in milsurps by the truckload, not one by one, so there might just be something somewhere...

Patrick