$400K for a watch .. WTF!

I realize that watch collectors are a breed unto themselves. Who else do you know who would be willing to drop some insane amounts of money for what amounts to a pile of gears that sits on your wrist. Whether it be a few grand (or more) for something like a Rolex or some other timepiece collectable money seems to be no object.

But $400,000.00 for a watch that has a chain drive?

[hat tip to SlipperyBrick, Book of Joe and The Watchismo Times]