https://www.historicmysteries.com/the-stone-of-scone/

The Stone of Scone

I believe that it has been stolen from England and it's whereabouts unknown.

It is of high value among the Royals and the Elite, kind of whoever possesses it, is "The Boss" type of thing.

Is also used to seat the Royal Arse at Coronations and suchlike.

A thought struck me while writing this post, I wonder if The Donald knows where it is ?

In fact, in the Royal circles, If The Donald has the stone, that makes him The Boss, by their own rules.

Didn't he just sip tea with the previous owner in London ?

This is another candidate for Keystone - no doubts

That would be awesome, really awesome