Hi: I am thinking this is not chinese but I am hoping someone might know where it is from. I wonder if it could be iranian. The blue is very purple in the photos. It is really a medium blue. The yellow is a mustard yellow and the green not so bright. It is not very shiny. It has been well used and has cracks, bubbles, firing flaws etc. Thanks again.
Photo of bottom.
You are right, it could not be something traditional Chinese. The colors are one problem, but with Chinese items deer or a goat might be depicted; here it looks more like antelope.