Waterloo and Ligny relics

Having looked at further illustrations of bayonet scabbards of the period I now believe that is what it is. Thanks to those who have helped

I am adding a scale to assist

looks like the end of a scabbard, like for an infantry sabre, a scale would help for all photos to give a better idea.

Not an expert but looks like part of a (bayonet?) sheath or scabbard. Example below:

British, Baker Rifle sword bayonet & scabbard Baker Flintlock Rifle Sword Bayonet (historicaltwiststore.com)