Per request and you know who you are, I've posted a few more pics. The clay was supposedly mined from the Dragon Hill Clay Mine. Its volume is 120ml.The chop mark on the bottom is not an artist signature, rather the name of a shop that was quite famous during the Qing Dynasty. I think it is pretty safe to suggest that the pot is not from the Qing period, but has been evaluated between 20-40 years old by a professional.
As you can see from the first pic, you can vaugely see the 'joint line' that most zhu ni pots have. Furthermore, in the same pic, you will notice a stress crack on the inside rim. As zhu ni shrinks in the kiln, they can crack due to the amount of shrinkage. Fortunately, the particular crack does not affect the pot at all. :)