UC Berkeley's first Nobel Prize, a 23-karat gold medal awarded to physicist Ernest Lawrence in 1939, was snatched last week from the Lawrence Hall of Science, where it's been on display since 2003. Police aren't sure whether the thief used a key or picked the lock - or exactly when it vanished. (Sometime between last Tuesday afternoon and Thursday morning is their best guess.) The four-ounce coin, valued at $4,000 (that's it?!), has not yet been listed on eBay, though if you're suddenly in the mood to start a Nobel Prize-related coin collection, there are plenty of others to swap your cash for. Not sure where to begin? Perhaps you oughta contact this Craigslist poster, a self-proclaimed "professional who speacializes [sic] in helping people build wealth in the best investment of them all, gold and silver coins." Oh, and if you happen across the missing medal, lucky you - the hall of science is offering $2,500 for its safe return.