7 old flat plates with green fish barbotine from Sarreguemines

Set of 7 antique plates in Sarreguemines barbotine earthenware, France, produced between 1920 and 1950. Stamped on the back, in the shape of flatfish (soles), green in color with a slight iridescent film in the light, Art Deco style. Slightly deep flat plates. Maximum width 28 cm (head + tail), outer diameter 24 cm, inner diameter 16.5-17 cm, height 2.5 cm. Very good condition, some scratches in the center and contact between the plates, but no signs of cutlery. Natural cracks in the earthenware, some manufacturing defects such as small losses of enamel, no cracks, no chips. They appear to have been stored without being used. Three show traces of water or limescale, discreet on two, visible on one. Approximately 300 g per piece, or approximately 2 kg for the set.