Fake Rolexes included in auction

There was an article in the Wall Street Journal this morning about a bunch replica watches which were almost included in an auction of bankrupted auto dealership mogul, Denny Hecker's assets.  It just goes to show you that when you buy watches on the second-hand market, you need to be extra vigilant to make sure you don't end up overpaying for a fake.  I was heard that Overstock.com was selling a bunch of Frank Muller watches a few years ago that they believed to be authentic, but later turned out to be fakes.  So even reputable sources can sometimes be bogus.