CHINA. Shaanxi Caoding. Provincial Trough Ingots. 3.5 Tael Local Tax Ingot, ND.136.96 gms. BMC-Class-XLII, group B, cf.#500. "Xi An Shou __ __ __" (Xi An Capital...). Responsible silversmiths name overstamped by "Guan Gu" (official Assay). Some doubling in stamp.VERY FINE.