206 BC - 9 AD. Rare! Ancient and authentic large jade Bi (ring) used as proto-money or wealth storage medium, Western Han dynasty (206 BC - 9 AD), China 

Primitive earliest Chinese coinage - a piece of jade carved into a shape of a coin, with a hole for stringing. 32mm in diameter, 6.58 grams, carved out of a thick piece of jade.

Smaller round pieces of jade in shape of coins (bi) are found in tombs from the Western Han period. This type is the latest, made of polished jade. Noone is sure what the purpose of these rings was, but because of their shape and their find-spots it is thought they were used as primitive coins, wealth storage or exchange mediums.

This coin is unconditionally guaranteed to be authentic.