(i) We can also understand history with the help of coins and the changes in the printing of currency notes.
(ii) The Reserve Bank of India prints the notes. It has its headquarters in Mumbai.
(iii) The coins from 1950 to those used at present, the metals used for making them, their different shapes, and the diversity of subjects on them together help us to understand the important contemporary issues in India; For example coins to convey the message of population control and coins communicating the importance of agriculture and of farmers.