Henry Seymour (FINDAGRAVE) started Seymour Cutlery in 1878. Their main product was scissors. Notice that their salesroom is in New York City. The company had his brother Robert (FINDAGRAVE) as helper. (At that location in the early 1870s was Warner File.)
Japanned and japanning means that the handle is with black lacquer.
Sanborn map analysis:
Sanborn 1915 map it is gone and Farr Alpaca is in the area