Yup. The (so-called) Hitler diaries were sold to Der Stern by a middle-man employed by the forger. Der Stern declared their provenance and (I believe) even went to press with the first installment before the historians and document experts had the chance to cry foul.

The forgery was a second-rate operation, relying solely on copying Hitler's "hand." The paper, bindings and ink were all easily proved to be of post-war manufacture and (IIRC) the forger accidentally quoted commentary (not Hitler writing first-person) from a Reich historian which lead to the discovery of the actual source document.

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In the progress of this discussion I shall endeavor to give a satisfactory answer to all the objections which shall have made their appearance, that may seem to have any claim to your attention.

Alexander Hamilton, Federalist No. 1