While the Moonwatch Speedmaster was chosen for our initial trip to the moon, NASA still worried that longer EVAs might pose problems. Thus they turned to Omega to build an even more robust watch, and the Alaska project was born. The initial prototypes were enormously expensive. This is one of the second series of prototypes. The case of the watch is modeled after the Speedmaster Mk. II, but is otherwise completely different, with a caliber 861 movement specially tuned and lubricated to ensure precision in extreme environments, a mineral crystal covering the silver-white dial, and oversized sub-dial hands that could be read even under extreme vibrations. Not long after, the project was cut short, leaving just a handful of prototypes remaining. This one recently sold at auction in Geneva for $192,500, making it not just a rare piece of history, but a valuable one, as well.