Hi, my name is*****'m a certified appraiser, and I'd be happy to help.
This is Chinese, and Chinese do not put maker's marks on items other than paintings. This would be a date, dynasty, or location mark--I haven't looked it up yet--but those are very, very often wrong, so we don't give them much weight.
Can you upload an overall photo of the vase? I only got the base mark photo.
Thanks. This is a very contemporary--fourth quarter 20th century--decorative piece.
True Chinese celadon vases would have molded decoration, not painted on like this. And it's very sharp and clear and representative--clearly meant for the Western market, and likely either stencilled on, or factory produced..
Sorry for any disappointment.