Rectangular serving board with rounded corners, clearly offset edge and recessed inner section. The inner surface is decorated with two double spirals with a partially scaled pattern in the spaces between. Served both as a tray for serving utensils as well as a plate for dishes with a low liquid content (e.g. meat). e.g. meat). Whether the shape was influenced by similar Japanese trays (jap. bon, or o-bon) remains unclear. remains an open question.