Rolex Model Numbers Chart. Model or reference numbers within a particular series of watch submariners say tend to follow an evolutionary scheme to wit. The model number can indicate the model type bezel and material of your watch.
The modern rolex gmt master ii with pepsi bezel is the 126710blro which sounds like a mouthful but when you realize that the ref. You will have to remove the bracelet strap to find it. The first two to four digits describes the type of watch.
Rolex model or reference numbers can be found on the watch case they are also listed on the documentation that is provided with the watch.
If the model number is not in the description then it is usually not a good sign. These numbers can also be found on the certificate that was issued with the watch by rolex or between the lugs at the 12 position. The modern rolex gmt master ii with pepsi bezel is the 126710blro which sounds like a mouthful but when you realize that the ref. Design differences are subtle.