Thank you all for your replies,
Kronckew, I already saw your interesting sword with the similar copper mounts and coral/turquoise arrangement,
The ''monster'' is Maru I'm right ?
For the blade, I cleaned it and it seems nice and old with the ''hair pin'' pattern, van it be 18th ??
The hilt is authentic too,
Nice picture of the three nails and pommel with the old wood of the hilt,
sadly no easy way to remove the white metal/low silver handle to see under..., it is welded and then folded...