CHINA, Eastern Zhou dynasty – Warring States Period. State of Qín. City of Gong. Circa 350-220 BC. Æ Cash (45mm, 8.88 g). Gong in jīnwén (bronzeware script) to right of central hole / Blank. BN, Chinoises I 183; Hartill 6.1. Dark green and brown patina with earthen deposits. From the Norman Frank Collection.