This is the information that I have been able to glean about the bayonet. I am not a collector myself, so my knowledge is a bit limited:

Beautiful French bayonet and scabbard with inscription on the spine of the blade which reads “Mre d’Armes de St. Etienne Aout 1876" showing it was made by the St. Etienne arsenal. A very nice early example of the long bladed bayonet for the French Fusil Modèle 1874 "Gras" Rifle, first developed as a cartridge conversion of their Chassepot Fusil modèle 1866 Needle Fire Rifle.

The ricasso has two hallmarks that show it was produced for the government at the French state arms plants and by Steyr in Austria. The blade of this August 1876-dated bayonet remains overall bright with light scabbard marks and specks of fine oxidation and staining. There are partial stampings on the reverse ricasso and the maker markings along the spine remain crisp and clear.

It has a wood and brass grip and comes with a matching scabbard. You can tell because the numbers on the cross guard and scabbard match (86326). The number three on the scabbard is not very clear. The bayonet and scabbard are completely intact. Light signs of rust on the cross guard, and no dents or bumps on the scabbard. The scabbard is of sheet-rolled steel, tubular semi-oval in shape and with a ball finial. The scabbard retains most of its original black finish. The scabbard has several rust patches. See photos. The bayonet measures 26" in the scabbard. Great condition overall.