Identification assistance

[RealWing]

Thanks for all the information so far!!

To address some of the comments:
1. No, I am not sure it was used in the Battle of Waterloo - I'm only going on what my grandparents had told me.
2. I cant see any sign that the metal part of the grip has been modified. It all looks original to my untrained eye.

Any ideas on when it was made?

Thanks again
Jim