Currency is something that is circulated around the country no matter what. It’s something every citizen will have touch, look at and use, regardless of their socio-economic standing or political view. You may not have a TV to watch the news, but you’re still going to have a Rs. 10 note.
In a diverse country like India, especially back in India’s turbulent 80s and 90s with the Rajiv Gandhi Assanination, Operation Blue Star, Kashmir Insurgency, Bombay Blasts, liberalization, constant political changes, the national message had to be unity. And, who better to do it other than the father of the nation himself?
That’s why he was picked over leaders like Dr. Ambedkar, Chhatrapati Shivaji, Sardar Patel, Netaji, Jawaharlal Nehru and Indira Gandhi. He was the only who could represent the ethos of our whole country.