I have tried to search the stamp online but I have not find anything. Could someone help me? Thank you
It says ???????3??. Can't read the last character. But basically it says Jiangxi Jingdezhen porcelain. As far as I know it wasn't until after the '49 revolution that the porcelain factories started joining together and using such seals.
Looks like if it was ?, but it is irrelevant. The meaning here seems to be the no.3 factory. As Hmm indicated this would be a 1950s or later item.