Rolex GMT-Master in 18k yellow gold with green dial. Auto w/ date. With box. Ref 116718. Circa 2007. Fine Pre-owned Rolex Watch. Certified pre-owned Sport Rolex GMT-Master 116718 watch is made out of yellow gold on a Gold Link band with a 18k Deploy buckle. This Rolex watch has a 40 x 48 mm case with a Round caseback and Green Stick-Dot dial.
This Rolex is recorded on the bitcoin blockchain which proves it is authentic. More information can be seen at:
https://www.youtube.com/watch?v=8O0AMaCs9XM
The above certification on JewelChain.info proves the watch was purchased from a reputable Rolex jeweler, and therefore proves the Rolex is authentic. Not only will this help you resell the watch if needed... you can use your cell phone to prove to your friends the watch is authentic.