100 Cash - Wang Mang Third reform

Wang Mang's monetary reforms were among the most ambitious — and catastrophically received — currency interventions in Chinese history. The third reform of 10 AD introduced a sweeping new denomination system intended to replace Han coinage, but the artificial valuations assigned to the new cash pieces bore no relation to their metal content. Merchants and commoners resisted outright, hoarding the older Wu Zhu coins that Wang Mang had explicitly banned on pain of enslavement.

The result was economic paralysis. By 14 AD, Wang Mang was forced into yet another revision, effectively admitting the third system's failure before the Xin dynasty itself collapsed in 23 AD.