To bump up the flagging interest,let me add the footnote: incriminated teapot did appear to the market after famous 2001 royal nepalese household massacre. http://en.wikipedia.org/wiki/Nepalese_royal_massacre
My theory is that while Crown Prince Dipendra kept occupying himself with machine-gunning King Birendra and all other members of the Royal Family in sight,the servants did what they do always in situations of strife-pocketed royal property in lieu of wages.
One needs to differentiate between "tibetan silver", usually the chinese fake junk and "nepalese silver" where occasional jewels as above can be found.
Sheffield assayer has impressed me. He has phoned back, apologised for the delay due to the battery of tests conducted. Said, with surprise in his voice that conclusion was: a pure silver. And what I want to do about it. My answer was;written certificate and Britannia on the vessel,
which was done.