A 1776 copy of the U.S. Declaration of Independence became the most expensive item ever sold on the internet when it fetched £5.4 million on Sotheby's site.
The auction house sold the document to U.S. television producer Norman Lear and his business partner David Hayden.
They plan to make it a centre piece of a patriotic roadshow.
An amateur collector found the document in 1989 hidden behind a torn painting.
The copy was produced by Philadelphia printer John Dunlap, on July 4 1776. It is one of 25 that survive from the hundreds that were printed and sent to the 13 colonies proclaiming independence from Britain.
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