清代咸丰宝川小平雕母 极美品。Qing Dynasty, Emperor Wen Zong, Chengdu, Sichuan Engraved Master Cash ND (1851-61) XF Details, (Clay Residue), Board of Revenue, as Hartill-22.960 (according to Hartill, "Only known as a pattern," but this piece is an Engraved Master. 25mm, 9.58gm, thickness of 2mm. Obv. Xian Feng Tong Bao. Rev. Boo Chuwan. An incredibly rare prototype type coin. From The Valley View Life Collection