Please help me date this Korean goblet tea bowl

[sergey_of_fields]

I don't know much about it. The posting said "Goryeo to Yi dynasty". It's 10cm wide by 10cm tall. My best guess so far is 1700s. Does that seem right?

Here are the photos: https://imgur.com/a/U8IqH02

Thank you in advance.

[peterp]

That looks older than 1700 to me, but then I'm not that familiar with Joseon dynasty white porcelain. (Yi was the royals family name, the Japanese have a tendency to use that name.)
I see more Goryeo dyn. celadon which is more based on celadon.

Never saw that type of base/stem, but I guess it depends on the kiln. As you possibly know the Joseon dyn.  lasted about 500 years and much of its porcelain was of the white type. The many glaze faults seen here remind me of Japanese Ido tea bowls from hundreds of years ago, they also imported Korean wares, especially tea bowls. I believe those were made by kilns located near the southern coastal area.

I have never seen this specific shape, really, neither among Chinese, Japanese or Korean ceramics. I wonder if it could be something to put on an altar, like the Chinese high foot bowls?

[sergey_of_fields]

Thank you. I have also never seen something like this, nor turned up a piece like it in my searches.