Votive Plaque with Maitreya(?)

The object is a light gray, stone or plaster plaque. The plaque is roughly oval in shape and has a rough texture. A figure is carved into the plaque; the figure appears to be a representation of Maitreya. The figure has a rounded face with a serene expression. The figure's facial features are a nose, mouth, and eyes. The figure appears to have its right hand raised to its face. The background of the image is white.