mmm. perhaps I am wrong but, the handle edges look sharp. the dot punch marks still have a raised surround, the silver appears new in both style & quality, so Id guess any rust must have been very light surface rust.
That doesn't necessarily imply great age.....
In the world of antique weapons, to me brand new means younger than me,
Im 50
I think your sword is a lot younger than that.
But experts in this area like Alex A.J. Artzi, Charles, R.S. & many others could better advise.
Spiral