This is not poetic license. The bell section is sterling silver, with a 24 carat gold wash inside.
For a view of the golden throat, see here.
For more sapid shadow shots, click on the badge, below.
Look: I am eager to learn stuff I don't know--which requires actively courting and posting smart disagreement.
But as you will understand, I don't like to post things that mischaracterize and are aimed to mislead.
-- Brad Delong