set of 4 plates cap in Scandinavian potter's sandstone Sweden 1960

Set of 4 plates sandstone cap - from sweden. Heavy sandstone with brown mineral cover, with the only decoration of the rigor of the material softened by a row of neo classic pearls stamped in the earth before cooking - we think gustavian style, we think late 18th of creil and montereau. 4 strong plates of their history and yet of a total abstract modernism. To be assigned. Diameter 18cm.