Ink Tablet Decorated with Emblems of Investiture

Octagonal ink tablet with flat surface and angled sides. The surface has wavy line patterning as background. There are carved emblems into the surface. There is what appears to be a house or temple in the centre. The image includes four people near the bottom. The octagon has a slightly raised border around the edge. The surface of the ink tablet is a dark grey. The background the object sits on is beige.