The British Museum claimed it would return a collection of 5,000-year-old looted antiquities to Iraq this week after they were seized from a London dealer shortly after the US-led invasion in 2003.
The eight objects were confiscated by police in May 2003 after the dealer failed to produce proof of ownership and were passed to the institution for analysis earlier this year.
Three of the items carry Sumerian inscriptions which identify their origin as the Eninnu temple in the ancient city of Girsu, now known as Tello, in southern Iraq.
Their identification was made easier by the fact that Tello is one of the excavation sites where the British Museum has been training Iraqi archaeologists since 2016.
"The other items are identical to objects known from excavations at Tello and most likely also originate from the same site," the museum said in a statement.
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The objects are believed to have been removed at night by a small number of people over a short period of time - the scale of the looting is more limited than elsewhere in southern Iraq.
They will be formally handed to the Iraqi embassy during a ceremony at the museum on Friday, from where they will return to Iraq.
Iraq's ambassador, Salih Husain Ali, praised the museum's staff for their "exceptional efforts" in identifying the antiquities.
"Such collaboration between Iraq and the United Kingdom is vital for the preservation and the protection of the Iraqi heritage," he said in a statement issued by the museum.
"The protection of antiquities is an international responsibility and in Iraq we aspire to the global cooperation to protect the heritage of Iraq and to restore its looted objects."
The objects include three fired clay cones, each with an identical cuneiform inscription which has been seen on many other items, and references the deity Ningirsu.
There is also a polished, yellowish river pebble and a fragmentary white gypsum mace-head, both of them also inscribed.
Another object is a white marble amulet pendant in the form of a reclining four-legged animal, dating back to around 3,000 BC.
A red marble square stamp seal or amulet pendant, depicting a pair of four-legged animals facing in opposite directions, is from the same period.
The final item is a white chalcedony stamp seal with a flat oval face engraved with the design of a reclining sphinx.