Sichuan 100 Cash

Xian feng, 1854 -55 issue of the Sichuan Board of Revenue, Brass 100 Cash. Type L obverse, variety of Hartill (Qing) # 23.53; Hartill# 22.981
OB: Xian feng Yuan bao
RX: Dang bai (value 100); Boo chuwan (smaller?)
55.5 mm; 46.13 gm