Green and white slip oyster plates

Set of 6 vintage slip oyster plates. Each has 6 hollows for the oysters, and a central space for the sauce. They date from the 1950s-1960s, they are very beautiful pieces, heavy and of high quality. A very beautiful dark green color, and white for the oyster part. They are not stamped, but they were most likely produced by the longchamp factory, which created models that were similar in every way. In very good general condition, 3 plates have a small crack in the earthenware itself, which must have formed during cooking and is completely normal for these pieces (see photo).