I was surprised by the number of spurious offerings listed today on fleabay under Vacheron Constantin pocket watch! Here is my rough count of complete watches, including a number of American private label pieces:
Genuine: 15 (watch only, no verification of seller's claims to royalty, etc.)
Unknown: 2 (lacking movement pics)
Damaged: 7 (usually dials)
I've ignored the numerous stand-alone movements that have cropped up since rising gold prices make scrappinig more attractive than restoring . After looking over the Breguet, Patek and Audemars PW listings, it seems V&C has the highest ratio of fakes and frankens.