There’s no indication the plate has any use whatsoever, this listing is for 1 single plate with 3 available for purchase. This plate is a pristine piece of vintage Nordica Light Green dinnerware from the Harmony House collection. Produced in the mid-20th century, this pattern features a distinctive green leaf-like mandala design on a cream or light yellow stoneware base with ridged edges. Product Details: Brand: Harmony House China Pattern Name: Nordica (Pattern #4582) Material: Stoneware Style: Mid-century modern / Boho Size: Dinner plates are approximately 10 1/4" in diameter. Status: Discontinued