Watch List notes:

WARRING STATES: Anonmyous, 400-220 BC, AE knife money, State of Qi, H-4.6y, three-character knife, qi fa huo (the authorized currency of Qi) in archaic script on obverse, reverse character fa, characters in high relief, heavy encrustation, Fine. The State of Qi was an ancient Chinese state during the Warring States Period of ancient China. Its capital was Linzi (present-day Zibo in Shandong). Qi was founded around in 1046 BC as one of the many vassal states of the Zhou Dynasty. The first ruler of Qi was Jiang Ziya, the most powerful official during that time. The Jiang family ruled Qi for several centuries before it was replaced by the Tian family in 386 BC. In 221 BC, Qi was the last major state of pre-Imperial China to be conquered by the State of Qin, which became the Qin Dynasty, the first centralized empire of China.

Estimate: 550- 650 USD