12 cyl Mercedes Engine
The remnants of a British bomber taken from the bottom of a large lake in Scandivia. A Liberator IIRC. I think it is a I saw a special on this plane on History Channel a few months ago.
They had a number of planes in 'as found' condition. Many impressive displays, but this one was the best. And humbling, knowing men died in that plane.
http://www.rafmuseum.org.uk/raf-museum-collection.cfm