While Robert Downey Jr.'s character Sherlock Holmes in "Game of Shadows" does smoke a pipe, it's not explicitly stated what kind of tobacco he uses. The focus of the film is on the mystery and the detective work, not on the specifics of the tobacco.
If you're interested in the history of tobacco pipes, there are many resources available online and in libraries. However, it's important to remember that smoking is harmful to your health and should be avoided.