In 14th century a particular great monarch in Africa sent ten rich Merchants to buy raw gold and silver in north Africa.This merchant journey involved going through trans Sahara dessert rout to North Africa.
Morever,on their way through the trading rout, they met a man who gave them coins of silver and gold in exchange of their wares.
meanwhile,their aim was to buy raw gold and silver to be processed in their land.Though, they bought the raw gold and silver.
So, after the merchants came back to the monarch,they narrated how they came in contact with a man with coins of silver and gold and how they unanimously decided to buy the coins from the man.When the dynasty saw the coins,he quickly recalled that his grand father had similar coins.As a result,he decided to keep them for posterity as antiques. Presently, the coins are foundin the nation museum for historical reference.