Large old clay/terracotta dish with Japanese Art Nouveau enamel

Very rare, magnificent large bowl or dish, old probably late 19th early 20th century, in clay, terracotta. Sublime Japanese decoration of flowers, daisies, bindweeds and chrysanthemums, as well as a bird in flight, perhaps a swallow, in polychrome relief enameled by hand. In the background, wild grasses, grasses, in fine gilding, outline and interior hollow gilded. Unsigned craftsmanship. It is perhaps a support bowl for a pot or vase, a hole in the back could allow it to be made into a wall decoration. 35.5cm in diameter, 2cm in height. Very good condition however a little use and marks of time, in particular degilding, fine cracks in the enamel, natural, small friction, wear, on the latter, nuances and discreet stains. Harmonious set, no chips or cracks. Between 2 and 3kg.