I found it on the bay & in my Goins Encyclopedia.
The trade mark was first used by Koeller & Schmnitz in Solingen Germany, 1884 but had offices in New York City, Dubuque, Iowa & then they became an indepenedent company known as Fox Cutlery Co in 1915 in Milwaukee, WI.
Funny the seller is from Wisconsin.
Like Srdjan said, an offer for the scales would be all it is good for.