Hello Battara,
thank's a lot for your message,
( and no PM for me
)
I can't see a lot between the hilt and the base of the blade,
I put pictures, maybe it helps.
On the basis of the blade, there is a sign of mechanical sanding so maybe is has been over cleaned
but it contrasts with the hilt and guard, really well preserved ( especially the wood hilt ) for being really old..?.