To nie takie łatwe.
Najbezpieczniej jest kupowac przedmioty z PAS Ref. nr.
Czesto numery widnieją na przedmiotach lub dołączony jest świstek z PAS.
Tutaj trochę:
Sellers listing items of potential Treasure found in England and Wales before 24 September 1997 should be able to provide proof that the items were reported under the law of Treasure Trove.
Sellers listing items of potential Treasure found in England and Wales on or after 24 September 1997 should be able to provide proof that the items were reported under the Treasure Act.
Sellers must be able to provide either Crown Disclaimer documents or the find's Treasure number and include these within their listing. Finds that do not fall under the definition of Treasure, but are recorded with the Portable Antiquities Scheme will have a unique reference number, which sellers should list.
Sellers listing items found in Scotland should include a disclaimer certificate in the listing that shows items have been reported and that they have been given legal entitlement to be sold.
Sellers listing items found in Northern Ireland should produce certification in their listing to show the items have been reported to the Northern Ireland Environment and Heritage Service or to the Ulster Museum.
Sellers listing items found in the Republic of Ireland should be able to provide evidence that the items were properly reported under the National Monuments Act. Since ownership of archaeological objects automatically vests in the Irish State, sellers should also be able to provide evidence of a waiver of ownership from the relevant Minister.
In all cases sellers should state the origin of the archaeological objects
W-g prawa, sprzedaż istotnych przedmiotów jak i posiadanie istotnych przedmiotów( ponad limit czasowy), które nie były zgłoszone, jest zabroniona. A które przedmioty są istotne, które nie - to już jest zawarte w Treasure Act.
http://www.legislation.gov.uk/ukpga/1996/24/contentsDlatego też np Amerykanie kupują takie rzeczy na ebayu w sklepach online i płacą 300-500% więcej :D