Ancient Indian coins are popular with collectors as this country has so much history. India has punched marked coins going back to 2500 BC.popular coins are from Danish India in 1620 to old coins of Sikh empire in 15th centenary to British empire coins of this centurary.India was also one of the first country to make gold coins and even invented the number system we use today in 500 BC and added o so we can all count thanks to India