Not simple. The forums I know have deleted pictures, and some even complete threads. Had a long time ago a Trompette of the 1890's to clean up. It had a broken tang, and a replacement handle from a file. It was the first time I had an original Nogent from that era in my hands, and asked at another forum Bernard Levine about the original construction. The thread has been removed, but I've copied his answer. He wrote
"The tang would have been longer than the handle, peened over a tiny nickel silver burr at the butt end.
Also very thin.
The original ebony handles tend to split, because they are bored down the center with a large diameter hole, leaving just a thin web of wood on the sides. They look solid, but they're not."
With the tang being so thin at the end— less than 2 millimetres, the thin ebony sides, and the tiny "burr" (a typo, I guess), it is very unlikely to find an 1890 Nogent in its original state, or it should never have been used.
I have later handled another one, completely original this time, where the bullet had almost completely ended in the wood. A bit problematic as the virole had become loose. No further tightening was possible.
Here a silver knife by Jean Auguste Sabatier from the 1880's. A first communion present.
See the protruding bullet at the butt on the first photo.