Thanks Radboud!
That the riccaso is missing a bit, and maybe shortened, was something I considered since part of the engraving seems to look like it is cut off or could originally go below the edge of the cup.
A recycled blade, onto a more recent cup & hilt makes sense. The solder also felt like a repair and a bit sloppy. So a more recent composite actually would fit the evidence better.
(BTW, I am in NZ as well.)
Numerals, cuts in steel.

3 dots, and another view of the 'wrong' looking tube between handle and cup.