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") / Crude archaic character Nei (“inside”). 140mm long, 13.85 grams. Hartill #6a var (different calligraphy).

From an old US collection (comes with the original collection box) of Nathan Bower. Uncleaned