Going out on a limb with this one. The dome is NOT cracked but hollow. There is a huge open space above the threads. Piece is filled with firebrick, has two open base bubbles, a few fleabites, and fracturing associated with a huge gob of milk in the skirt.

Close to "factory" mint.

How about $75 plus shipping. I've never seen another piece with a dome like this.

Ask for more photos if needed.