Note the areas where the "plumbing" of the bluing is affecting the finish
(Left) Pictures giving further detail of the sword and scabbard. Note the remnant silver wash on the scabbard and hilt. This would indicate the the sword was in use by an infantry officer. One side of the languet has an eagle, the other side is plain.
(Left) Note how the bluing on the blade is developing the "plumb" color. This could simply be the effects of time and cleaning over the century-plus years, or perhaps it is due to the manner in which the application was initially applied.
(Below) Undoubtebly of French origin. The French favored brass scabbards. This one exhibits acanthus leaf pattern.