Art Nouveau ceramic pitcher with lava stone look

Art nouveau ceramic pitcher in the style of those produced in denbac in the 1930s or 1940s. The ceramic had to be enameled again in the 1960s or 1970s to obtain this lava stone appearance. Nice pale pink color. Very good condition, no damage. There is a small defect in the enamel: under the spout the glaze has a brown stain (see photo). It's not dirt so it won't wash off! The interior has traces of limestone that I have not been able to remove. I recommend using this pitcher as a vase or for decoration. Height 14 cm, diameter 14 cm.