I just noticed this silver conical bore flute on eBay. I don’t know if it is solid silver or just has a silver skin over a wooden body, but either way, I bet its really heavy. 
It has quite a heft price tag too.
is a rare silver italian flute. I spotted one quite similar in a museum here, in Rome, some time ago. It worth the price.
It is a double walled flute. The outside is metal and also the inside, but there is empty air in between. Has to be a great flute.
There is a discussion about it on the group Flute History Channel on facebook…