Zhengde Tongbao

'Circulating coinage of True Virtue'; Vietnamese: Chính Đức Thông Bảo / Chánh Đức Thông Bảo) is a fantasy cash coin, Chinese, and Vietnamese numismatic charm[1] bearing an inscription based on the reign title of the Zhengde Emperor of the Ming dynasty.

There were a large amount "cash coins" bearing the Zhengde era name are minted from the late Ming to early Qing dynasty periods as superstitious "lucky coins" with auspicious depictions and instructions (making them Chinese numismatic charms), as this inscription remained popular for charms modern reproductions of the Zhengde Tongbao are also very common.

A common belief was that there were two and a half genuine cash coins in China which is what made these amulets lucky objects.

[5] Despite the fact that no Zhengde Tongbao were ever officially cast by the Ming dynasty a very large amount of them do exist today in the form of Chinese numismatic charms and amulets which is likely due to the fact that the inscription Zhengde Tongbao (正德通寶) could be translated as "currency of correct virtue" or "Coinage of True Virtue".

[6] Another variant of the Zhengde Tongbao charm only contains the Hanzi character wén (文) on its reverse which is usually used as a measure word for counting cash coins but could also mean "obverse".