Nilaish had started collecting banknotes since 1999. He has learned with Mr Kishore Jhunjhunwalla & Mr Rezwan Razack about Indian Paper Money between 2010 and 2011. He has recently published: A Comprehensive Guide of Early Paper Money of India (1770-1861 AD) with Xlibris Pubishing UK. This book is also cataloged by Library of Congress (USA). He studied BCom and furthered his studies from University of Oxford (UK). He has also studied MBA in International Marketing from Coventry University London Campus. He has also published many research papers in mathematics in international journals of repute. He holds prestigious memberships of organizations like; Indian Mathematical Society (Est. 1907), EWDM of IMU (Germany), Referee of Journal of Royal Society Interface London. Currently, he is CEO & Joint MD of Priceless Collectables LLP (www.priceless-collectables.com). This is the first firm in India of high end collectables set up at Bengaluru.