Reims shell casing (?) fashioned into pen holder. WWII?

I found this gem at a goodwill. I like strange things and this just caught my eye. I think it’s made from marble and brass

Bought this dresser at an antique sale. It does not have a drawer stamp. But it does have 2 different hand stamped markings on the back

Antique Bonnie Prince Charlie brass fork featuring a decorative handle with a bust of Bonnie Prince Charlie and the inscription 'Culloden 1746'. The fork measures approximately 47 cm in length and is in good condition with some signs of aging.

Carved mahogany busts of 2 winged Egyptian or African gods

It is 17" tall and 8" wide. Half of it holds water/tea and the other half holds coal/embers to keep it warm. There is a small door at the bottom of the coal side for cleanout. Inside the coal side are tubes where liquid would flow to warm the tea. The bottom of the pot is very worn and if there are makers marks, I can't tell them apart from scratches. It is beautifully etched all around in an Asian motif. It looks to have been crudely repaired at the spout long ago. It was black but i polished it a few years ago. Please any help would be appreciated by my family. Thank you.