Royal Bonn ornate spoon and fork servers

Hello Everyone, I have the above which are silver plated. I believe they are German. I have a matching bowl with silver plated rim. The first three symbols of the hallmark are WH & S . There are 2 more symbols that I cant identify. Any help with this would be much appreciated.

Hello, do you have pictures?

WH&S is the Sheffield company William Hutton & Sons. The bit you can’t identify are the gothic-style characters BP for Britannia Plate; i.e. electroplated Britannia metal.


Thanks Phil, this information is really helpful.