Primitive earliest Chinese coinage - cowrie shell imitation made out of bone without holes or "teeth". 20mm long, 1.61 grams. Hartill type #1.2.
Cowries were used as primitive money in China since the 2nd millenium BC. Later on, bronze cowrie-shaped coins and cowrie-shaped coins made out of carved bone (like this piece) were used as money. This piece is of very nice high quality!
This coin is unconditionally guaranteed to be authentic.