Wow! Antique-shop.com forums are in the big #1 spot on Google for the search term "antique shop forum", for 4 years running!Thanks to YOU.
No , but on the first picture, you can see the chip on one side and the other part has kind of bubbled out and become porous.
I was going to ask if it was a lotus flower. To me it looks like a flower. Was it sold by the museum? Maybe you should contact the museum.