3. Patek Philippe Platinum World Time - $4 million
Take a sudden and gigantic leap right up to the four-million-dollar mark and you find yourself presented with what was once the most expensive watch in the world. The reason being that it is an absolute one of a kind never to be repeated – it’s apparently pretty good at keeping accurate time as well. Still, that was back in 2002 four when it fetched the at-the-time record sum of $4 million at auction – little more than a drop in the ocean when compared to some of today’s list toppers!