Finding the Model Number on a Rolex Watch case
Rolex has many different model numbers, or reference numbers for each model watch it makes. For example, a Rolex Datejust has the following model, or reference, numbers that uniquely identify each model;
116333 116203 116233 116231 116138 116139 116208 116238
Finding this model number is easy. Just remove the band or bracelet at the twelve o’clock side and look for the numbers inscribed on the case as shown below.
For help on removing the bracelet from the watch, please see the following link: How To Find The Serial Number on a Rolex