18a. Obverse side of a Bu Quan (布泉 or "Spade coin"), cast from AD 9-14 by Han Dynasty usurper Wang Mang who created the Xin Dynasty (7-23 AD). The coinage was too complex and people did not trust it. 26mm in size; 3+ gram3 in weight. S-175. This coin was known later as the Nan Qian (男錢; "Male Cash"), from the belief that if a woman wore this on her sash, she would give birth to a boy. Eventually, Wang Mang's unsuccessful reforms provoked an uprising, and he was killed by rebels in AD 23.