Real Rolex types are delivered new in the factory having a Hologram-encoded (3-dimensional) sticker around the caseback. This sticker functions the trademarked Rolex "crown" positioned previously mentioned the watch's situation reference range. The hologram may be quickly determined by viewing it from various angles, therefore leading to the qualifications pattern to alter. Nonetheless, "most" counterfeit stickers aren't holograms whatsoever, but instead merely a repetitious "Rolex" pattern which doesn't alter in look when seen from distinct angles. It truly is really worth mentioning the real Rolex hologram stickers didn't function the "crown logo" like a component from the hologram till (about) 2002, once the sticker was redesigned. At that time, the Reference range was also altered from gold lettering to black, as it really is presently. Rolex versions featuring the Triplock crown (i. e. Submariner, Sea-Dweller and Daytona) use an additional seal inside the threads from the winding crown's tube. This gasket resembles a black o-ring and may be visible once the winding crown is unscrewed totally. As demonstrated inside the instance over, (most) counterfeit designs won't function this o-ring seal, but fairly can have simple screw-down threads. It truly is really worth mentioning that some new counterfeits will function a "similar" searching rubber seal, but on nearer examination you are going to see that it really is simply cosmetic, and just isn't practical. As demonstrated inside the picture beneath, the Triplock crown might be recognized by three very small dots positioned beneath the trademarked Rolex "crown" logo, that is engraved around the finish around the winding crown.