The diameter of the circle is about 310 mm and the thickness is about 50 mm. - It is a solid wood tray. - Uses: In addition to being used as a tray, it can also be placed as interior decoration in a room or entrance. The manufacturing date is unknown. The photos are everything. Please refrain from purchasing if you are nervous. Shipping will be done by wrapping it in a transparent plastic bag and shipping it in a box. No claims, no returns. Thank you for viewing.