Legit or total scam? Let's review this extraordinary story:
In 2008, a Chinese tomb was opened after 400 years of sitting there untouched. When the coffin was being unwrapped from cloth, something metallic hit the ground. They disovered a mud and rock encrusted watch ring stuck at 10:06 time reading with "Swiss" carved in the back.
I haven't found any updated info on what happened with this find, but they were working on a documentary so it must have surfaced at some point. I did find this fantastic article that talks about potential watches made in the last hundred and so years comparing it. This does seem like a very unusual piece.