Pair of 26-sided carved jade seals, Eastern Han Dynasty

A pair of polyhedral-shaped seals carved in jade with engraved characters. On the square faces, 18 surfaces, there are seals engraved with four characters each in archaic script. The triangular faces are not engraved. They are in good condition, although they show traces of pigment, dirt and patina. 

References: Shaanxi Museum of History, 'Duguxin polyhedral charcoal essence seal', reference number: 176. 

Size: 3.2 x 3.3 cm; Total weight: 215 g