Cast Iron Pot Lid Belgium 6 Yellow

Nice vintage lid to a cast iron pot or Dutch oven. Its yellow and slightly raised with ridges and oval finial. Marked inside FE 6 Belgium, and measures about 8" in total diameter on the inside. Good condition with some black rub marks, soil and a couple small nicks in the enamel as shown. Not sure what brand of cookware it was made for, but its definitely vintage.