it is probably nothing but recently there have been posting on turner classic movie site.
I am sure it is a fake but we can dream can't we.
Ambersons film sent to Welles at his hotel the Copacabana Palace. Film did not leave Brazil after that due to customs problems. Adhemar Gonzaga did not destroy fil as directed, unclear why. So film ends up back at the Palace. Hotel finds film cans after the war and for whatever reason sends film to the Cinemateca. Sometime between 1946 and 1976(?) film probably in unauthorized private hands beacause if still at Cinemateca it would have burned in 1957 fires. It ends up at the São Paulo Cinemateque in 1976(?), cans labeled correctly but ignored by over-worked local perservation staff which assumed it was regular print of film. In 2006 their archivist contacted Warner about film cans which turned out ot be complete print in poor but salvagable condition. Film flown to US once Warner gets o.k. from Brazilan court.
DVD in 2008/09.
Warner will be releasing the 131 minute restored version of Ambersons in late 2008 or early 2009. A complete print was located in a Brazilian film archive. The print is undergoing the 4k restoration process.