The artifacts, which date back to the Sassanid era that extended from 225 BC to 640 AD, will be sent for laboratory tests in order to confirm their authenticity.
They were discovered in the town of Aziziyah, which lies 70 kilometers southeast of Baghdad in Wasit province, according to Hassanain Mohammed Ali, director of the provincial antiquities department.
The coins bore drawings of a king or god and depicted flames, he said.
Many of Iraq’s archaeological sites have been vandalized and encroached upon in recent decades, but especially in the years following the US-led invasion of 2003. The capital’s National Museum was also looted in its aftermath.
At the time, nearly 32,000 pieces were stolen from 12,000 archaeological sites across Iraq, and 15,000 others disappeared from the National Museum in Baghdad, according to official figures.
Thousands of artifacts were also taken before the invasion in illegal excavations at remote sites.
During the rule of now-executed dictator Saddam Hussein, Iraq enforced laws protecting historical sites.
But since his ouster, such laws have seen lax enforcement and the government has prioritized reconstruction of the war-battered country over preservation of its heritage sites.