Please Help I.D. Odd i995 Marked Sea Shell

Hello, my name is Chance I am new to the forum. I recently came across an odd hallmarked sea shell. No I am not 100% sure this is silver I have not tested it yet. On one of the legs it is marked “i995 S” (there is a capital “I” before the 995) this is what is making me think it is at least a silver composite, but I have not seen this exact mark before. There are also some other markings in the shell. I believe they are British. I can make out a Bell in the middle but I can not make out the others, possibly a left facing head.

Any help on this would be much appreciated. i will include photos.
shell 004.JPG
shell 003.JPG
shell 002.JPG

These are not British silver marks, but I can’t suggest where they might be from.