Antique art deco vase 1920-40 in fine stoneware, art nouveau and chinoiserie style, decor

Very fine antique vase from the 1920s-1940s, probably mid-1930s. Unsigned, in fine stoneware biscuit (or possibly porcelain), in a style combining art nouveau and chinoiserie. Handcrafted, thrown, stamp-decorated and hand-painted, with enameling only on the interior. Pot-bellied amphora shape on a small raised round base, narrow neck and flared spout, two double handles in the art nouveau / art deco style. Unglazed exterior, beige matte texture, decorated with dark Payne blue edging and Chinese-inspired floral and geometric motifs, close to a paisley pattern, gray/black painted filling in the petals and on the leaves, black painted edging and handles. Metallic brown-black enamel interior, reminiscent of certain Belgian productions from the interwar period; the shape of the handles, the material and the technique suggest European manufacture. The chinoiserie-style decoration is misleading; it is probably not an Asian production. This vase does not come from industrial or semi-industrial mass production: a slight deformation of the neck highlights manual shaping. Rare and decorative object, probably Belgian, French, or Dutch. Perfect condition, some small discreet stains, visible use inside but not very marked.