Postby 2209patrick » Mon Feb 16, 2009 2:31 am
Hello.
Looks like British silverplate marks.
The letters "BP" stand for "British Plate" which is a form of nickel silver. This is the base metal under the silverplate.
Not sure who used the FN & S mark.
A good possibility is Francis Newton & Sons Ltd., Portobello Works, Portobello Street, Sheffield, England (founded c.1906).
Pat.