Niderviller “stone” shell plates

Three plates with small shellfish (clams, snails, small flat oysters, etc.) from Niderviller, “pierre” collection. Enamelled earthenware, stoneware finish in cracked matt beige tones and white drips. Stamp mark "niderviller 1748-1770 France / hand painted / stone". In very good condition (no accidents, no scratches from use), except for a small notch under enamel (molding defect) on the edge of a plate. Diam. 21 cm.