Must have been a time traveler.

Anachronous discovery: Swiss watch in ancient tomb
Russia Today, December 16, 2008

Chinese archaeologists have found a tiny Swiss watch in a tomb dating
back to the Ming dynasty, which they believed has been intact for four
centuries. The watch was discovered by scientists making a documentary,
reports ananova.com website. The out-of-time piece of jewellery was
pressed into the soil covering one of the coffins. The watch is stopped
at 10:06, and there is the word "Swiss" on its back.

http://www.russiatoday.com/features/news/34824

See also Ananova [UK]: http://www.ananova.com/news/story/sm_3122542.html