Picked this up at an estate auction about 15 years ago in Chester County, PA. It was so dusty when I bought it that I didn't realize it had carving until I wiped it off. Apparently no one else noticed it either since I got it for $10.
The spout has 10 facets filed into it.
The butt plug is flat and shaped to fit the horn, attached by iron nails and has a small iron staple for strap attachment.
In this view you can see a sailing ship, some figures, and some scratching that I can't make out.
Another sailing ship and more scratching.
Bird, another figure and some animals.
Dale H