Antique Vase

This vase was with my wife's family for 3 generations which would be more than a 100 years,  How they got it, I'm unable to say, Originally my wife's mother and family were from Medan, Indonesia.

At the moment it is in my wife's possession sitting quietly in the bedroom.

This is the description of the vase:

* Color - dark navy blue

* Height  - 16 1/2 inches

* Base - 15 inches

* Mid-section - 28 1/2 inches

* Top rim - 22 1/2 inches

* There are two (2) dragons around the mid-section

* There is a stamp mark on the neck of the vase.

I would like to know how old it is, where did it come from and it's worth.