:mrgreen:

:mrgreen:
Show-off, John!

- you know how jealous I am of this piece

- but it looks as if you've answered your own question about the rings. I can confirm I've never seen one before, though I have seen a few Japanese Globe vases.
Never mind,

as they say, "What a friend has, is never lost."
Glass looses heat as soon as it is out in the air. That's why, when working it, they have to keep on putting it back into the glory hole.
Even if the marver is heated, it's nowhere near the 1000+++ degree centigrade it is in the pot when fully molten.