Catalogue entry no. 586 by Max Loehr:
586 Knife-shaped Tablet
Approximately rectangular, flat slab of translucent, light ray-green stone with brown clouds. While this piece does not possess the characteristic trapezoidal form of the ancient knives described above, Nos. 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, it nevertheless belongs to the same typological group in consideration of the two perforations along the back and of its cutting edge, which is straight and blunt. Post-Han(?).