The construction of the blade is beautiful.
"Local experts" said it was junk? What a joke.
Maybe they were referring to the blade material...Knife collector,
in general prefers known material like ATS34, CPM-440V, CPM-420V,
D2 Tool Steel, O1 Tool Steel, A2 Tool Steel...etc.
(I'm a knife collector, too. But now I prefer collecting ethnographics pieces.)
As for the broken sheath, it could be repaired accordingly.