What's your opinion about these little bowl?
Batavia ware. Age depends on foot rim shape, which is not clearly visible.
new pics
The outside of the foot rim still is unclear, probably because of the dark color. If the rim is slighty slanted, then it is likely 18th century, it would probably be about 2nd quarter of 19th century or later.
thank you Peter
yes in fact, the foot rim is slightly slanted