As Sylar said, alot of gen owners take the sticker off when they buy the watch and keep it with the papers, and then maybe put it back on when they sell it.

You can buy holograms on eBay of varying quality.

I also read that the stickers can actually end of containing lots of bactera from your skin/perspiration etc. Not sure if that is true, but it really doesn't matter if you don't have a sticker.

N.