Rare Early Black Cloisonné Bowl with Blue Base

  

Here is a very nice Cloisonné bowl that I understand to be Chinese but unsure. There is damage to the blue enamel on the base.

There black look in good condition with no major damage but I can see some tiny tiny bit of enamel missing, I think this is common for the age. I have cleaned it but it needs a real deep clean at some point. Please study the photos and ask any questions. If you need any more photos just ask.

It is about 16cm by 5cm.