First these would need to be inspected in person by an expert who specializes in antiquities from the Middle East. After that person has looked them over and confirmed age then established the value, they will then provide written documentation of their expert opinion. When you have that information, you can then look into the correct avenues for sale which may involve the legalities of selling ancient artifacts out of the country. If it is deemed an exceptional wall sculpture set that is over 2650 years old, you will then want to try to have them consigned to large name auction houses such as Christie's or Sotheby's.
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