SERVICE: W S Norton & Co 18s Pocket Watch

I received this pocket watch in for service, though I can’t find much information on the manufacturer other than a mention in the March 1893 edition of the “Jewelers Circular and Horological Review” of the disillusionment of one such company. It’s possible it is a private label, but I don’t recognize the movement. It has a rather unique slide lever setting mechanism. A nice quality 15 jewel movement that runs well after service.