CHAU2154  This is a vintage large 10" x 8" official hand signed letter on headed paper for Willhelm Hanle who was a German experimental physicist. He is known for the Hanle effect. During World War II, he made contributions to the German nuclear energy project, also known as the Uranium Club. This was part of a collection from a medical student in the 1970s and 80s writing to historic doctors and surgeons discussing their research and gathering their autographs. It is folded once where posted (which is how I will send) otherwise is in outstanding condition. You will never get a better autograph opportunity than on the Nuclear Physicist's headed paper from his Berlin offices.   Please see all my other scientist and surgeon autographs from this same collection.