If it's any help, I have some near identical vases that my parents bought in Sydney brand new c. 1989. That should date your vases very accurately!
Dec 11, 2011
vase by: peter
This is a modern vase with a "Made in Jingdezhen" mark. The mark itself should be written from top down, right to left. But it is written top down left to right, which is typical sign of modern production. Not a fake, though, just modern. The colors, especially the blue look as if they were printed. Not an antique.
