Rare Nei series high quality knife money, city of Yi, ca.400-220 BC, "Warring State" period, Yan Kingdom under the Eastern Zhou Dynasty

Large archaic Chinese character Yi (also can be read as "Ming") / Two large archaic characters Nei Ji (“inside, Ji”). 140mm long, 16.36 grams. Hartill #4.43, type #6.aa

Rare and high quality piece. Ji 吉 is a family name, it is probably a reference to the moneyer or some official in charge. Ex: Q. David Bowers Collection.