$ 10.00
A vintage used replacement part for the Pyrex Flameware stove top coffee percolators  the glass for the 6 cup percolators... marked F-30. Aprx. 5-1/8" outer diameter.

Fair condition - this estate item saw a lot of use. The glass has rub wear from boiling vibration - some small fleabite chips to the outer rim. Quite usable, but not the prettiest. Discounted price.