The one from Dan is on the left and the new ones from Lois is on the right. They are the same design but are probably done at different times.
The one on the left is stamped Japan on the bottom and there are no marks on the one on the right. I think maybe the one stamped Japan is probably older but I don't know for sure. The lettering and some other features are less worn on the one Lois found but that just indicates it's probably seen less use. They also have different eyes.
The glaze jobs differ a bit too.
Very cool. Now I have a set!