My guess for the blade and I concur with late 19th century and into the 20th century for origin of make up.
http://www.arms2armor.com/Swords/fren1887iof.htm
Continental as well, my thinking but the styles easily travel and get absorbed in other cultures.
The T shape Gras bayonet blades are spine to edge, whereas the Epee blade linked is side to side, as is this dagger.
Cheers
GC
One viewer read my modern hafted poinard as a sai
An 18th century blade on this one with quite modern parts, overall.