Any ideas who might have made me?

I bought this cause I liked it:heart:green not just cause it was $3:heart:a bargain!
.. but now I have had a good look at it the more I think its alot older/better than I first thought its unmarked so I know its a longshot but I'm hoping someone may know of something similar...it's 12cmh.
The fine ribs spiral & are overflowing with glaze & they are on the inside as well as out..& the body appears to be pottery then glazed white then green then thick blue then irridescent green around the rim..its lovely!