Hello Mr. Maisey,
the question if my sheat is from silver or not don't let me quiet, so I just come back from a goldsmith: My sheat is from high grade silver!

Never know before that I have something real special with this sheat. What's funny, I buy this sheat some years ago here in Germany on weapon market and not in Indonesia.
I ask him also if he can sell the silver-test to me. This is not possible in Germany because it is a risky acid.