For me, the white edge at the base of the blue glaze is one thing that makes me think it could be more recent than late Qing. Does it have the same appearance at the top?

If you look at the edges on the vase Brian posted, they don't look like that.

@julia thanks for your thoughts. To me, it seems my vase has the same trimming style as the Kangxi vase shown on the Gotheborg site under the term "undercut." Maybe even the same color porcelain. I will show a picture tomorrow during the day for you to compare if you would be willing. Also, around the inside of the lip opening of the vase there is a glaze ridge like on this vase sold by Christies. I'm not saying mine is Kangxi, I'm just noticing similarities. https://onlineonly.christies.com/s/collector-london/large-chinese-kangxi-style-famille-verte-baluster-vase-96/180345

@centralpapottery I have a Chinese vase from the 1950s that also has that kind of foot rim, although it's also stamped "CHINA."

I will add some close-ups soon, but wanted to point out the third and fourth picture on this link concerning Kangxi circles. I can't even see the beginning and ending of inner or outer, but the mark is M&P Kangxi according to Peter. Thoughts? Mine (which I'm not saying is Kangxi), as has been pointed out, both have beginning points at approximately 9.

https://bidamount.com/authenticating-kangxi-originals-from-fakes

In my opinion, my foot is very similar to the Kangxi foot on Gotheborg site Glossary “undercut.” The white glaze is finished the same and the undercut is somewhat slanted.

As to flaws, there are two porcelain bumps and one hole shown here, but only three more similar bumps and a few more holes on the vase. I believe this photo will also show what I believe is the powder blue color.

I’m not sure what other pictures anyone would like to see, but please let me know and I’ll try to take it. For the two below, I’m simply showing a photo taken outside of the base and circle mark and also a closeup to show the porcelain is not as white as

the glaze.

Here's the Gotheborg example.

https://www.gotheborg.com/glossary/undercut.shtml

I am not an expert, but I do look at tons of images.  The marks seem off in the thickness of the lines, the weight of the color of the lines, they don't look delicately drawn. There is often a slight variance in the thickness of the two rings and the space in between the two rings. These seem to perfectly uniform.  Also the diameter of the rings in relation to the base seems off. 

Also, to recall an earlier post:

https://bidamount.com/the-bidamount-asian-art-forum/main-forum/kangxi-marks-foot-rims

There was some consensus that the vase with the stepped in footrim and double circle mark was 19th century.

Happy to be told I'm wrong, I learn more that way 🙂

Best,

Brian

@happyholiday well, I'm hoping you are right for 19th, haha. If you have any double circle marks and can compare, my lines are 1mm thick. Also, the distance between the outer edges of the circles is 4.6cm. It may be my pictures. The circles actually look pretty comfortable on my vase. I feel any smaller and they'd look too small. Any larger and they'd start looking like the Kangxi bowls with double circles. Anyway, seem ok for the 30 cm vase, but I could be wrong.

Here is a similar coloured vase. I don't know if you are using a flash, but look how soft the colour is and how creamy the white rims are compared to yours. I wish I had seen this sooner as it probably shows what I meant better than my words. 

I don't know for sure if this has a stepped rim underneath, but as you know, the whole vase has to be pretty much correct, not just the foot rim. 

Whoops, forgot this! 😊 

https://www.christies.com/lot/lot-5523992

@julia thanks. I see the difference there. But, it seems there is a wider range of what's considered powder blue as shown by these below and others. But I'm open to suggestions as to what type of blue this would be called with those small dark blue flecks.

https://www.christies.com/en/lot/lot-5598625

https://www.christies.com/lot/lot-three-chinese-powder-blue-glazed-vases-18th-century-5660378/?

https://onlineonly.christies.com/s/art-china-winter-edition/powder-blue-glazed-phoenix-tail-vase-50/77999

I don’t see this vase as powder blue as it does have a Kangxi step the new photo’s definitely show the inside trimming as 19th century. It’s more rounded than flat. One other thing is these were not one offs but produced in quantities the shape must match Kangxi period pieces in many forms to a tee it seams to match a lot of 19th century forms. Also does it show ribbing my guess is you have a 19th century Kangxi revival vase and most likely had a matching lamp.