Very nice old knife, stockman.
Tweedale says that MANHATTAN CUTLERY Co. was a mark used by John Newton & Company. According to Tweedale, the company was set up by Arthur Lee & Son in 1861. Arthur Lee was, presumably, the American representative for Moss & Gamble, in the 1860s. He returned to Sheffield in 1870 to set up his own agency as a cutlery merchant and American importer.
The next paragraph says that John Newton opened Manhattan Works, at No. 11 Arundel Lane, by 1887. There is no mention of any relationship between Arthur Lee and John Newton, or any description of how the mark passed from Arthur Lee to John Newton?
Newton sold table and pocket cutlery, Bowie knive, and razors through H.Boker in New York. He also imported shears, scissors and trimmers from Boker. John Newton was listed in directories up until 1926.
The Newton trademarks were purchased by John Watts, on Lambert Street, in about 1900. John Watts existed until 1999.