Touring office of billionaire, best investor of our time, Warren Buffett

OMAHA, Neb. - It's not everyday you get an office tour of one of the richest men on the planet -- and arguably the best investor of our time.

Warren Buffett's office is a modest one in Berkshire Hathaway's Omaha, Neb. headquarters. What was found -- or not found -- might surprise you.

History lines the walls of legendary investor Warren Buffett's office.

"I formed my first partnership in May of 1956 so this was a year-end balance sheet which I typed myself. In fact, you'll probably find a few typos in it. And these are the partners I had at the time," Buffett explained. "If they kept a $10,000 investment, and then when I liquidated the partnership and invested it in Berkshire Hathaway, they would now have about $500 million."

A vocal Republican in his earlier years, Buffett leans left and is a big supporter of President Barack Obama.

"We were talking about the economy, what else, and I'd brought along some figures that I thought would be of interest to him. That was when I got the Presidential medal of freedom."

The billionaire's office is also full of a model Mars Rover given to him by students at Cal Tech. And then there's the mock Sports Illustrated cover.

Oh, and you won't find a fancy flat screen, just an old tube, and no computer which means no email. Perhaps a secret to Buffett's success.