Swirl pottery bowl

It is a pottery bowl with multi colors black,white,shades of brown,orangish color in a swirl type design with some type of pattern going around the outside.It must have been in the shed for years.The pattern is hard to explain but shows in pictures.If anyone could tell me about this,that would be fabulous.It appears to be unusual to me because I have never seen one like this and my mom has a pottery collection.Anyhow thank you for any information you may know.I am willing to consider any reasonable  offers on this item.

Fair