Porcelain? Ceramic? Opening 8 inches wide, 25 inches around, 3.5 inches tall.
Unknown
Thank you for contacting Mearto. This is a blue and white ceramic bowl with speckled imperfections. Iron residue contained in clay moves to the surface of the ceramic body over a long period of time, forming small rust spots. See more detailed information about this below.
Because of the spots, we can see that this bowl is old, from the Ming or possibly Qing dynastic eras. The characters on the base appear to be 木古, which could be a name.
The Fair Market Value of this piece is between $200 and $400.
Iron spots:
“All Ceramics are constructed of clay, an earthen material of tiny-grained minerals. Being a natural substance, it usually has small amounts of impurities. One of these that is useful to collectors is iron. Over a long period of time, iron moves to the surface of ceramic objects and forms little dark specks. The iron becomes oxidized when it comes into contact with air and appears brownish or even black.
Rust spots are helpful to collectors since they require centuries to develop and their presence can be an indicator of age. They are easiest to see on Porcelain since the base material is usually white.
Rust spots seem more common on 'Blue and White' Porcelain of the Ming era since these older pieces have been around long enough for rust spotting to develop. As well, there seems to have been more impurities in the clay used during that ancient time. Rust spots can also be seen on more recent multi-coloured Porcelain of the Qing dynasty but is less common.”
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