This beautiful plate or bowl is a piece of Japanese Imari porcelain, a style characterized by its vibrant underglaze blue, iron-red, and green hand-painted designs on a white background. The central design features a prominent dragon motif, often depicted amongst clouds, while the scalloped borders contain intricate geometric patterns. Beautiful painting and excellent quality porcelain.

This plate is likely an antique or vintage charger—(a large decorative platter)—dating from the late 19th-century Meiji period to the early 20th century and measuring 10-1/2" diameter. Produced in Arita, Japan, and exported through the port of Imari, giving it its name. 

It is in excellent condition with a bit of sand in the glaze in a couple areas. This is quite normal because sand was laid on the the bottom of the kiln to prevent wares from sticking ot it. As such, many pieces have some sand that finds its way into the glaze. There are no chips or cracks and it rings like a bell.

Japanese dragons (ryū or tatsu) are revered as benevolent, wingless mythical beings symbolizing wisdom, strength, protection, and good fortune. Associated with water, rain, and storms, they are considered guardians and symbols of imperial power, differing from Western fire-breathing monsters by serving as protectors of humanity.