This is a good Chinese porcelain circular Platter or large plate, made for the export (Canton) market, during the middle of the 18th century, Qing-Qianlong period.
The plate is well hand decorated with much detail in varying shades of cobalt blue, with a glaze of a very soft light blue shade.
The plate has a central hand-painted pattern of bamboo and other flowers issuing from a rocky base with a fence, all within a geometric inner border. The inner rim also has a continuous decorated border design with three sections. 
The reverse is undecorated..
We date this piece to circa 1770.
 
Diameter *
12.75 in
Height *
1.38 in