This is a vintage set of four triangular serving trays made by Nambé, a brand known for its modern and sleek designs. The trays are made of metal alloy with a metallic finish and are stamped with the model number 551. They are large in size and have a modern style, making them a great addition to any collection of dinnerware and serveware. The trays were made in the United States and have a mid-century modern design.