A UK woman, Jeanne Marchig, has filed a lawsuit against Christie's in Manhattan federal court. Marchig claims when she took a piece she owned with her husband to the auction house in 1997, they told her it was the work of an anonymous 19th century German artist. It ended up selling at auction the following year for a measly $20,000. Thing is, it may be the work of Leonardo Da Vinci, with an actual value of $150 million!

While the lawsuit claims one of Christie's experts misattributed the pen-and-ink-drawing, a Christie's spokesperson told the Post they "strongly disagree with these claims and believe they are without merit. The continuing debate surrounding this work has seen a significant number of the world's leading academics and critics continue to cast doubt on the alleged attribution to Leonardo." (Oooh, first name basis!)

According to the Guardian, the court papers claim ample evidence that it's a Da Vinci, noting a faint fingerprint matching that on a painting by Da Vinci, and "carbon tests indicating dates from 1440 to 1650, not the 19th century." When Christie's examined it in 1997, they only did a 15 minute examination. Marchig is seeking unspecified damages, but we're guessing the suit is somewhere in the $150 million range.