https://twitter.com/Yellowriver478/status/1666579698405740545
The coin armour of the North American natives, belonging to the Tlingit people of the Yukon. Most of the coins used is from the Qing dynasty, ranging from the Shunzhi to Xianfeng periods, while the earliest is from Yongle period (1403-1424) of the Ming...
and those of the Kangxi and Qianlong emperors being the most popular. These copper coins may have been obtained from trade with Chinese or Russian merchants. The Tlingit had used such coin armour to make Russians' smoothbore muskets powerless.