The notes on the score of Federlein's "March Impromptu" were purportedly made by Adolf Hitler's secretary, Martin Bormann, toward the end of World War II, Der Spiegel reported Friday. A Dutch journalist, Karl Hammer Kaatee, who had come into possession of the score made it public late last year.
Leon Giesen, the filmmaker, who is also from the Netherlands, says a note on the score -- "where Matthew plucks strings" -- is a reference to Mittenwald, a small town in the Bavarian Alps. Mittenwald is known for the manufacture of violins, an industry begun in the 18th century by Matthias or Matthew Klotz.
Giesen thinks Another note -- "end of the dance" -- is more specific, suggesting the treasure is buried at the end of train tracks that ran through Mittenwald in the 1940s.
Stories of treasure hidden by the Nazis at the end of World War II have been a staple of spy stories and movies for decades. There were plans to store the reserves of the Reichsbank in Bavaria, and at least some gold bars and currency were missing when they were given to Allied authorities after the German surrender.
Giesen says test drilling has found signs of foreign substances in the soil in Mittenwald. He plans a more thorough excavation, possibly financing it by crowd-sourcing.
Jurgen Proske -- a local historian and amateur archaeologist who has found World War II-era remains in Bavaria, including a wine cellar dating from 1940 -- said the find "could be a treasure chest ... but it could just be a manhole cover."