London , England ( CNN ) -- A letter written by Adolf Hitler in 1931 hoping for a `` truly cordial relationship '' between Britain and Germany goes on sale Tuesday and is estimated to fetch up to £12,000 at auction . The one-page letter was addressed to Sefton Delmer , a British journalist , in which Hitler expressed hopes of a new friendship between the two countries to replace the `` unhappy war-psychosis '' that existed after the First World War : . Hitler wrote the letter 16 months before he became chancellor and seized power in 1933 . In the letter he said : `` I hope ... that out of this crisis a new readiness will grow up in Britain to submit the past twelve years to a reappraisal . I should be happy , if as a result of this the unhappy war-psychosis could be overcome on such a scale as to permit the realization of the truly cordial relationship between the British and the German peoples so eagerly desired by myself and my movement . `` For I believe that the crisis now breaking in on us can only be solved by the closest political collaboration of those nations who see in the re-establishment of a natural European balance of power the first precondition to dealing with those great world problems under which Britain too suffers today . '' Andrew Roberts , the British military and political historian , said the letter was a classic example of Hitler trying to lull Western democracies into a state of appeasement . Roberts said Hitler was saying there were underlying interests between Britain and Germany and that he wrote many such letters . `` He refers to 12 years which would make it 1919 , the year the Versailles Treaty was signed ... appeasement was his central message until the outbreak of war . Sefton Delmer would not have been taken in by any of this , '' said Roberts . Auctioneers at Bonhams in London said the letter has remained in Delmer 's family until now but they could not release the name of the person selling it . Delmer was the Berlin correspondent of the Daily Express at the time when Hitler wrote the letter . He was born in Berlin and spent the first 15 years of his life there before his family were expatriated to the UK . He is reported to be the first British journalist to interview Hitler , who he later described as a rather ordinary looking man with hair that had been arranged too carefully .
He wrote the letter two months before he became chancellor and took power in 1933 . Andrew Roberts : ` ` " was his central theme until the outbreak of war . '' Roberts was the foreign correspondent of the Daily Express .