There are
A couple of makers marks forums and id sites on the net. Try silver marks ir simething. It hlped me a couple of times!
Editing this thread as I realised it could be dutch? Just the number indicates a reasonfor that and the K could be the makers mark.
The S925
is a standard mark for sterling that is 925/1000 silver and the rest is usually copper. So, you know it's not French, because they require 950 parts per 1000.
British would have ...
British hallmarks always have lion passant, town mark and date letter, most of the time a makers mark, these are not english!
My guess was scandinavian, however I hate guessing!