Museum finds "secret" message in Lincoln's watch

I was just reading through Yahoo's odd news section. And came across this interesting piece of history.

Abraham Lincoln had a gold watch. With a secret inscription, that he didn't even know was there. It was uncovered Tuesday at the National Museum of American History.

The engraving, by watchmaker Jonathan Dillon, is dated April 13, 1861. And reads in part:
"Fort Sumpter was attacked by the rebels" and "thank God we have a government."

After being contacted by the watchmaker's great-great-grandson, Doug Stiles. The museum agreed to open the watch. To find out if the message really was there.

The American Civil War began on April 12, 1861. Forty-five years later, the watchmaker told The New York Times that he was repairing Lincoln's watch. And he had heard the first shots of the Civil War had been fired.

The watchmaker said he unscrewed the dial of the watch and used a sharp instrument to mark the historic day on the president's watch. As far as he knew, no one had ever seen the inscription.