The white bowl adorned with cobalt blue paintings of flowers and other designs was spotted by an antiques enthusiast at a yard sale in in the New Haven area of Connecticut.
Nepal's Foreign Minister Pradeep Kumar Gyawali confirmed that the Government of Nepal has conveyed its formal objection to the remarks by India's ruling party leader.
British archaeologists were the first to mention the existence of that factory early 1900s, but they couldn't determine its location, the antiquities ministry said.