Can anyone identify these marks

This was my great grandmas christening cup. I know she was christened on July 23rd 1902. Just curious as to the type of metal and where it came from.
Christening Cup 2.jpg
Christening Cup 1.jpg

The cup appears to be electroplate - the mark on the right looks like “EP”. I’m not exactly sure who the manufacturer is. If the first letter is W then it could be Walker & Hall. The “S” after the (W) (&) (H) is normally assumed to stand for Sheffield.