With the arrival of Ref. 16750, another notable improvement to the collection is the increase in depth rating from 50 to 100 meters. 16750 is the depth rating, which increases from 50 to 100 meters. The replica watch also features an old-fashioned acrylic crystal – Sapphire made its debut in 1982 with the first GMT-Master II ref. Sapphire made its debut in 1982 with the first GMT-Master II ref. 16760. 
Rolex made its debut in 1982 through the first GMT-Master II ref. 16750 with a three-link Oyster bracelet and a five-link Jubilee bracelet, and used tritium as the luminous material on the dial. Finally, the bezel features a red and blue Pepsi insert or all-black, similar to the stainless steel Submariner produced in the same era.
Here’s where things get interesting. Fake Rolex originally released the Ref. 16750 with a matte dial and painted hour markers. This dial variation is much rarer than the glossy dial GMT, especially considering that many of the original matte dials have long since been replaced in routine maintenance. Rolex switched to a glossy dial in the mid-1980s, decorated with white gold-encrusted three-dimensional hour markers. Some of the glossy dials produced by Rolex during this period had defects in the finish that caused them to crack, a process known in watch collecting circles as “cracking.” These dials are now affectionately known as “spider dials” and are highly collectible, as Rolex replaced many during routine repairs and service. 
The “cracks” on a spider dial are made up of tiny cracks in the glossy lacquer. If you look closely at the dial, you will see that it does not affect the white text. It may be hard to see at first, but the spider lines in the shine are the most visible when the dial is tilted and viewed in bright light. It didn’t take Rolex long to recognize the flaw and eventually replace the original lacquer material.
Rolex is notoriously high on quality, so the company can only consciously leave a copy watch with a spider dial with a new, flawlessly shiny dial when it leaves the repair facility. For some, this is good news, as only some replica Rolex collectors like this defect. However, some consider it an odd and rare representation of one of the few Rolexes to make a mistake on an important part of one of its most iconic timepieces.
For this reason, some collectors will pay more than “normal” Ref. 16750s for a spider dial. At the same time, it remains entirely possible to find such rare dials at prices comparable to models without them. the GMT-Master 16750 itself is considered a highly prized collector’s item because of its relatively short production run.
