Indian Numismatics and Monetary History is Shailen's area of research. His contributions span a wide chronological range, from c.500BC- the present, although the areas he is more interested in are Ancient India (c.500BC-AD500) and pre-Modern India (c.AD1500-1900). He contextualises coins into wider historical themes involving economic, social, political and religious histories.
Currently, Shailen is working on the complex subject of unofficial copper coinages in pre-Modern India. Produced at the cusp of industrial and pre-industrial monetary production, circulating widely across the Indian subcontinent, and consumed chiefly for mall value monetary transactions, these copper coins constitute one of the main fulcrums of our understanding of the role of monetary exchange media in complicated historical processes like colonisation.
Shailen's most recent research contributions include varied topics such as a study of plants and foliate motifs on Indian coins, a reappraisal of indigenous coinage in Gandhara, the coins of Satavahana and other dynasties in the river basin regions of Andhra Pradesh, numismatic reflections of Shahjahan’s campaign in Central Asia and prize-medals of the Parsi community of Mumbai.
One of his long-term research goals is to write a three-volume history of the rupee. In the next year or two, Shailen is exploring possibilities of starting a project on exploring the coinage of the Huns as a source for cultural and religious history of the Indo-Iranian borderlands.
As part of his job as a museum curator Shailen is also actively interested in presenting coins as an engaging visual source for understanding the past.