NORTHERN WEI: Anonymous, 529-543, AE cash (2.34g), H-13.23, yong an wu zhu, Fine. Yong An wu zhu coins were first issued in the autumn of the second year of Yongan in 529 AD by Emperor Xiao Zhuang. It is said that they continued to be cast until 543 AD under the Eastern and Western Wei dynasties. During the Eastern Wei dynasty, private coins with nicknames such as Yongzhou Green-red, Liangzhou Thick, Constrained Cash, Auspicious Cash, Heyang Rough, Heavenly Pillar, and Red Halter circulated, were all possibly Yong An wu zhus.