1 Scores of professional calling cards, Kīrtimukha of Sarasvati-Sindhu Civilization, signify seafaring merchants, scribes, accountants -- Wide distribution of professional calling cards of metal artificers, seafaring merchants substantiates major contributions made by Ancient India to achieve the Bronze Age Revolution of 4th m. BCE --Copper anthropomorphs in Ganga-Yamuna-doab, Copper Hoard culture area are professional calling cards of merchant helpers, scribes, accountants --Associated with Ochre Coloured Pottery (OCP) sites ca. 2600 to 1200 BCE Ahichchhatra Bahadrabad Bargaon Bisauli Fatehgarh Hastinapur Hulas Jhinjhana Katpalon Kausambi Mitathal Red fort Sinauli