I recently bought a sugar bowl which is in a classic shape:

It has been so often cleaned that the hallmarks are almost worn:
http://dinio.free.fr/Silver/SugarBowl/hallmarks.jpg
I was able to identify the lion passant and the leopard's head which in my mind correspond to the period 1896-1916, based on the upper part of their outlines. For the date letter it is much more difficult and there is no way to take a photo showing something interesting. But by looking at this mark in 3D, by making the light direction varying, I can guess that the letter was probably symetric and roughly circular. Therefore my choice could be 'o' for 1909. But it could also be 'c' or 'e' for 1898 or 1900.
The challenge is to try to confirm this with the maker mark. But it is also worn. Hopefully, its left part is quite intact, and presents a rather unusual outline for a maker mark. So the challenge is to identify the makers mark based on the outline and the very faint shapes it contains. For this I have taken several views of it under different lighting conditions and directions:

But I have no satisfying match in my documentation. My best guess is William Hutton & sons Ltd, but I am not sure at all. Can anyone help in this identification ?
Thanks
Dinio
.
