Bitcoin

At the time of the sultan first, different sultan different currency gold. Because every sultan who served them made a currency of gold
currency used residents at that time, different between children, adolescents and adults. for adults as merchants, they use the currency "dirham" made of gold.
while for teens, they use the currency "dinar" made from a mixture of dinar and silver. as for the children using currency "keuh" made of tin.