If you look closely at the plug of an original horn with a nail, staple, screw or hole drilled through the horn and Butt you may also see evidence of a Lobe that was broken off/removed because of a crack/broken piece or marks where an attempt was made to remove evidence of the break or restore the horn to use.
Never throw anything away, repurpose it, you'll never know what you will find a use for.
Tim C.
PS: Yes, I would classify myself as a Hoarder. TC