Some folks wanted to see more images of the original horn in my Rifleman's knife post so here you go...
I picked up this in a trade a couple of years ago - it came from SW Virginia. I decided to keep it for myself as a user so I added the buffalo rawhide repairs on both ends to close up a couple of cracks and then made the western style strap to match up with the 1825 date - an eastern horn gone west......
If there are any other shots you would like let me know - the flat butt plug is dark stained pine with a hand carved pine finial - it is held in with wooden pins and the horn was shaped round before inserting.