Ajit Pai @AjitPai
"Archaeologists in China have found what they say is the world’s oldest known coin manufacturing site." Casting molds suggest the standardization of these coins, which "replaced cowrie shells during the Zhou dynasty" from 770 to 476 BC. H/T @iampaulgrewal https://t.co/jTUvjJjUJq — PolitiTweet.org