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Pfeilring was a brand by Paul Müller and Paul Adolph Schmidt. Müller started in 1896, and in 1900 together with Schmidt, he founded Pfeilring. They continued until 2018, when they were acquired by InCase, a company in Essen, Germany. The Pfeilring brand still exists. I think Pfeilring used to have something to do with Goldachs as well.
Pfeilring razors often came in luxurious sets, complete with everything you might need for your nails. Here's a set complete with shipper: