Prime Minister Hun Sen unveiled the stolen jewellery and appealed to museums, institutions and Khmer artefact collectors to continue to return those items voluntarily to Cambodia.
Thousands of antiques and artefacts were stolen from Cambodia when it was ravaged by genocide under the Khmer Rouge regime and then plunged into civil war.
The Cambodian government has been negotiating with other countries, including the United States, and private collectors to return more Khmer artefacts to the kingdom.