Welcome to GMTMaster1675.com, a website dedicated to the iconic Rolex GMT Master model 1675. Over the past decades, the GMT-Master – and its longest running model the 1675 – has risen with the popularity of vintage watches to become a cornerstone of collections everywhere. Many collectors, like myself, found themselves entranced by the history and beauty of the 1675 but quickly were daunted by the sheer number of variations over its long production run. After having a fair amount examples pass through my hands, I thought that sharing what I learned could serve as an homage to those who taught me. So, with the help of many others to whom I am indebted, I created this site in hopes of helping collectors everywhere.


Notes: This site is meant as a collector’s reference, however, the estimations and conclusions made here are based on available information and are NOT definitive. As we learn more and more about vintage Rolex, the only rule is that there are exceptions. I try to mention points that continue to be disagreed on by collectors and give you my most educated assessment. But, in the end, this is a posteriori knowledge and not official in the least.

The site is updated as new information is brought to my attention. If there are honest watches with something that does not match what is written here, please tell me. I claim no responsibility for purchases based on the information obtained from this website, please do more homework than just coming here and above all – buy the seller. The site was put together in the hope that collectors continue to focus on this as a hobby with true scholarship and camaraderie rather than for investment or monetary gain.

If you’re interested in Rolex sports watches, I’ve also created a reference website for the Explorer 1016, feel free to check it out and learn more about that iconic model as well.

Special credit goes to:

  • JP (AKA “springer” on Rolex Forums) and Bill on PuristSPro, for their foundational contributions to the dial variants (especially the matte dial system) and continuous help to everyone on all questions GMT-related.
  • Jacek Kozubek of HQ Milton, Michael Morgan of Iconic Watch Company, and Beaumont Miller II, for their bevy of pictures.
  • To those I have credited throughout the site for their scholarship, to the others who donated additional pictures, and to those who helped edit.

GMTMaster1675.com is not affiliated with Rolex S.A., Rolex USA, or any of its subsidiaries.

Top Picture Credit: Bexsonn