唐代得壹元宝背下月 上美品TANG: De Yi, rebel, 758-759, AE 100 cash (20.56g), H-14.142, first issue of Shi Siming, crescent below on reverse, lightly encrusted, VF, R, ex Zhao Quanzhi Collection. Shi Siming was a general during the Tang Dynasty who followed his childhood friend An Lushan in rebelling against the Tang, and who later succeeded An Lushans son An Qingxu as emperor of the Yan state that An Lushan had established. This large coin was valued at 100 kai yuan cash during the rebellion.