Total height: 21; mouth span: 12 cm*9 cm, body length: 17 cm; central panel full length: 13.2 cm, lower section: 4.4 cm, upper section: 8.2 cm; bell length: 10.5 cm; top surface width: 7.6 cm; knob length: 4.4 cm, knob width: 2.6 cm, knob thickness: 1 cm*0.8 cm; stud height: 0.6 cm. Unearthed from Jiuliandun Tomb M1: 893
