Hi Anne:
I never knew what to call it - as I remember as a Kid this was a favorite spoon of mine to eat cereal with. Good a good heaping spoonful. I never thought of it as a Jam/Marmalade spoon - but that makes sense because you could get a better scoop of it.
I would think that it is English - since the Lion Passant is the walking loin with one foot raised, but it looks like the Older version of the Lion Passant (the longer body)...
Can't make out the thing between the Lion and the number of 925 as it is also wore down there. Most likely was either a date letter, or a place or origin -- I am guessing.
Have to look around a bit more...
Also - Years ago when I was researching some other silverware from 1750 - I had gotten a book from the library (Jacksons) on marks.
This lion passant mark reminds me of what I had seen from doing the research on the others as the body is longer. See:
http://www.silvercollection.it/ENGLABARNARD.html and scroll down to where it shows the Lion Passant pic of 1789. You will see that the Lion Passant is a bit more sleeker (and looks like a smaller head) than that of the Lion passant from the 1900's.
This is just me thinking out loud, because when I had contacted the V & A (Victoria and Albert museum) over your way about that other silver we had here -- both the Lion passant on those, and this one look the same. I also know that Spoons were not a part of the Silverware set back in those days. So that would make sense IF this was just a utensil for jam....
Anyways - I will keep looking. Trying to find the date code thing here -- and *might* be able to still figure out the date by the shape of what is left.