Almost dead certain it's not platinum. That would make not much sense.
950 most likely refers to its siiver content, which I believe would be Sterling, if the mark was not put there in an effort to deceive. Similar knives made in India or Pakistan often have fake hallmarks.
Your knife handle and sheath may well be Sterling, but that mark does not guarantee it.
Knife looks Eastern European or Asian in its style.
The wax on the blade could probably be removed with fingernail polish remover, but it looks a bit like gun bluing to me.
That's about all I have. Not really my area of interest or study.
DE OPPRESSO LIBER
"...Men may spurn our appeals, reject our message, oppose our arguments, despise our persons ___but they are helpless against our prayers. "