'Pile of letters' bought for $20 worth $12,000 because of MLK note

You know that feeling when you find $20 in an old pair of pants? Pretty great, right? Well, imagine that $20 turned into $12,000.

That's kind of the feeling we expect this woman had when she discovered a letter written by Martin Luther King Jr. in a purchase made at an estate sale. She explained, "I bought a pile of letters for $20."

Originally featured on a 2010 episode of "Antiques Roadshow" in Washington, D.C., the woman claimed she purchased the stack of letters at the estate sale of Richard Nixon biographer Earl Mazo.

Within it was a letter written by none other than the civil rights leader. The appraiser noted, "From Martin Luther King Jr. Very characteristic signature. Written on stationery: Martin Luther King, Jr. Dated: Sept. 1958."

As the Christie's appraiser recounted, the letter addressed King's belief that then-President Eisenhower wasn't serious about civil rights ... and that if future President Richard Nixon wasn't sincere about his views on race -- he was "the most dangerous man in America."

In total, the appraiser called it one of the best Martin Luther King letters he'd ever handled.

Though the episode was originally filmed in 2010 -- and the letter valued at around $10,000 -- the updated episode shows the value at closer to $12,000.

Not bad for about the price of a nice lunch.

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