When a worker named Jagannath Halder was digging as part of MGNREGA work at the premises of Ram Sita temple at Mayapur Haldarpara he found the silver coins in an earthen pot yesterday, the official said.
Halder deposited the coins with the local police station.
Hearing the news about the discovery the district administration ordered stopping of the digging work.
Nadia District Magistrate P B Salim said "we have asked the Archaeological Survey of India to look in to it."