I'm trying to figure out if this is a millstone and if so, what it might be worth. It's about 30 inches wide. Thanks in advance for any responses! I'm located in NJ
Looks like a grinding wheel to me.
Doesn't look like a millstone to me, either. For one, it isn't very big.
But I've attached a google page of images so that you can look at a zillion millstones! ;-) See what you think.
Here is a link that might be useful: Clickee
this is what you have.
Here is a link that might be useful: