Everything started like a crime story. In a motorway rest stop far outside Munich, Herbert Hauke met a mysterious older man who had ordered him there by telephone. He first asked him a few questions before handing him a plastic bag with two old, musty-smelling Leitz folders. Hauke only had to browse briefly to realize that he had come across a priceless treasure. At least for him, the rock fan from the very beginning and, above all, an excessive collector of rock and pop memorabilia.