This is a set of six French Haviland & Co Limoges hard paste porcelain 19th century oyster plates. The date is circa 1887.
The plates are 8 3/8" in diameter. Each plate has six deep wells, shaped to hold raw oysters, and designed to look like and emulate the oyster shell. Each well is deeper at the pointed end and the shape rises higher at the round end. The wells are brown at the pointed end, with the rim edge in brown, and a blush of color inside of each well. The pointed end is knobby and rises up off the plate.
The pattern is a factory applied transfer, one of purple flowers similar to poppies, with large green leaves and long green stems, and tiny red-orange background leaves and stems.
There are no chips, cracks or crazing.
The green underglaze mark is H&Co underscored by Depose. The blue overglaze factory decorating mark is Haviland & Co Limoges inside a double circle.