This is a bowl I bought in Saigon (HCMC) this week.
Unfortunately the staff in the shop did not speak any English, and
I only know a couple Vietnamese words, So I'm only left to my observations to work out it's date and origins.
It was in a special cabinet with a variety of ceramic and metal
All the characteristics seem right. A bare foot ring on the inside
base. Some little blisters in the glaze. Remains of two rims on the
outside, some inside. And the base of another inside. All nicely
slumped to one side.
Yes you could probably fake all this but I think I've been doing
ceramics long enough to read it. Besides the skills of throwing
something like this and slumping it just so would be considerable, and better rewarded making un slumped 15th-16th century reproductions.
But, If your from Vietnam and could do this, please contact me, I'm here
for two more weeks looking for a good thrower.