China - Qing Dynasty. QING: Xian Feng, 1851-1861, AE 50 cash (76.77g), Board of Works mint, Peking, H-22.759, 57mm, Old branch mint, cast November 1853 to March 1854, large size, brass (huáng tóng) color, likely mu qian (mother coin) or yang qian (sample coin), a lovely quality example! EF, ex Dr. Axel Wahlstedt Collection.