It was discovered by a metal detectorist in a shallow cremation grave at Chilham Castle in Kent in 1993.The material was subsequently sold at auction.
The CA letter notes that since the sale, "the metalwork has resided in that shadowy world of the private antiquities collector". Now the present owner wishes to export it and there is a temporary ban ("Celtic mirror export bar", MLA Press Release; "Culture Minister defers export of Iron Age Celtic mirror", DCMS Press Release; "Export ban on rare Celtic mirror", BBC News March 2, 2009). Clearly the piece is seen as significant:
As the only Iron Age mirror to have been discovered in Kent, it is important for the study of this type of object. Only 17 complete decorated mirrors dating from the Iron Age have been found in Britain. This is one of the earliest, and is especially significant because it comes from a known context which was subsequently investigated by archaeologists using modern excavation techniques.It is not clear if the ban is still in place.
The decision on the export licence application for the mirror will be deferred for a period ending on 1st May inclusive. This period may be extended until 1st August inclusive if a serious intention to raise funds with a view to making an offer to purchase the mirror at the recommended price of £35,000 (excluding VAT) is expressed.Should the mirror and two brooches (one apparently found by Parfitt, Parfitt and Macpherson-Grant "in the backfilling of the original metal-detectorist's pit") be reunited with the cinerary urn and cremated remains in the Canterbury Museum?