Some designs are so ingrained in the culture they become a kind of shorthand. The red and blue bezel of the Rolex GMT-Master is one of them. It is a simple, functional choice that has outlasted decades of changing tastes, a visual signature recognized far beyond the world of watch collecting.
Nicknamed the “Pepsi” for its color scheme, the design was originally practical. It helped pilots distinguish between daytime and nighttime hours in a second time zone. Yet its appeal quickly moved beyond the cockpit. The combination of primary colors gave the tool watch an unexpected pop of character, an identity that proved to be remarkably durable.
From Tool to Trophy
The journey of any enduring object involves this shift from utility to story. What was once a piece of equipment becomes an artifact. Archives, like the one maintained by Sotheby's, serve as the record of this transformation. They catalogue the small variations that create rarity, turning a production model into a storied example.
For the Rolex Pepsi, these stories are written in faded bezels, patinated dials, and subtle changes in typography. Each imperfection and evolution marks a specific point in time. It is this history, not just the object itself, that collectors are often pursuing.

