Imperial seal

Black and white photo of stone carving on a rectangular base, with a dragon design. The carving features a dragon facing to the right, curled up on itself. The dragon's body forms a curved shape on the right side. The base is rectangular with visible cracks and dark spots. A small inscription "21.75.1" is on the front right side. The background is a plain wall with a light-colored surface. Title: Imperial seal. Artist unknown.