a good indicator of quality is the inside surface finish.
I have a Wagner #8 covered pot I use as a DO and the inside of the pot and the lid (to use as a griddle) is slick.
also have a #8 round griddle made by KS&R CO, Sheffield Alabama, very likely Pre-Depression that is slick.
both belonged to my Grand Mom no telling the age of the griddle or the tons of flapjacks and 'hoecakes' that have been cooked in it beside bacon, sausage, eggs, chops and what all. will last on & on. can't beat 'em, I take the DO w/me every camp out. no telling at the 100's of lbs venison I've cooked in it and cornbread.
and I have some other stuff also, one a small skillet another large.
and 2 new covered pots w/handles a 6 pint and an 8, likely China but the inside is slick, they are good for small roasts, casseroles and such.