glazed

I have a tendency, whenever in a Goodwill store, to walk out with just about anything I see that has crazing. And apparently, I don't have to even know what it is. I'm a sucker for old stuff. Like with this piece of pottery here. Not only don't I know whether its ceramic or something else, or...

Was at a job site today and found these pieces. I picked them up as I thought they were out of place. Foundation just dug near Potomac river King George