Rolex Explorer History: From Its Mount Everest Expedition to Now

When a model is born out of an expedition to Mount Everest, the highest peak in the world, it demands the question: How do you go up from here? Yet, that was only the start of the Rolex Explorer’s ascent to fame within watchmaking history. For over 70 years, the Explorer has remained one of the Crown’s most highly coveted sports watches, donned by the likes of the beloved actor Steve McQueen; James Bond’s creator, Ian Fleming; tennis icon Roger Federer; music legend Johnny Cash; and such actors as Tom Hanks, Matt Damon, and Brad Pitt. Here, we explore (pun intended) the origins of one of the most iconic Rolex watches, as well as the significant references that have ushered the design into the modern era. 

History of the Rolex Explorer

The history of the Explorer really begins with Rolex’s Oyster Perpetual watch, or OP. All OPs consist of two key technical features that Rolex’s founder, Hans Wilsdorf, developed himself. The first is the Oyster case, whose hermetically sealed structure — secured by a threaded caseback and a crown that screws tightly into the case — set a new standard for water resistance and protection from other impurities like dust when it was introduced in 1926. The second came a few years later, in 1931: Rolex’s Perpetual caliber, a movement showcasing a self-winding mechanism driven by an oscillating rotor. (Learn more with our guide to the different types of watch movements.)

The Pre-Explorer Watch and the First Rolex Explorer

The combination of these revolutionary features led to the Reference 6098, or Pre-Explorer, in 1953. However, it differed from a typical OP in a couple of key ways. It featured a monobloc Oyster case that was oversize (36mm as opposed to the typical 32-33mm size of the era), as well as a largely domed crystal and caseback — often dubbed bubbleback — to accommodate the thick A296 perpetual movement. This model earned the nickname Ovettone, an Italian word translating to “big egg” for its unusual design. 

This Pre-Explorer is, in fact, the watch that traveled to the summit of Mount Everest in 1953 with Sir Edmund Hillary and Tenzing Norgay. Following the success of the expedition, including the watch’s performance throughout the elements and altitude, Rolex introduced two references: 6150 and 6350.

Reference 6350 was the first to officially display the name “Explorer” on the dial. However, Reference 6150 established what has come to be the signature dial layout of the collection, featuring an inverted triangle at 12 o’clock; numerals at 3, 6, and 9 o’clock; bar indexes for the other hour markers; and the combination of a Mercedes hour hand and a pencil-shaped minute hand. Alternatively, Reference 6350 was offered in a number of dial configurations with the choice of Mercedes, pencil, or syringe hands, along with the option of a waffle- or honeycomb-textured dial. 

Important Explorer References From 1955 to 2001

Beyond the initial references that established the collection, there have been several other important references over the years. The next came into production from 1955 to 1959: Reference 6610. The most rare and valuable example of this reference is the Albino version, fittingly featuring a white dial. 

One of the most significant references in Rolex Explorer history came on the milestone 10th anniversary of the line, in 1963. That year, Rolex introduced Reference 1016. This would go on to be the brand’s longest-running continuously produced reference, running for 26 years, from 1963 to 1989. Fittingly, Reference 1016 is considered the quintessential Explorer. 

Reference 1016 is most notable for its upgraded movement: Caliber 1650. This chronometer-rated movement was noted by an inscription on the dial — Superlative Chronometer Officially Certified — marking a first for the Explorer. In addition, the 1016 featured the first Oyster case to offer 100 meters of water resistance.

After the 1016’s long-standing reign came to an end, Rolex launched Reference 14270, which began to usher the collection into the modern era. With this reference, the Explorer got several updates while retaining its 36mm stainless steel build. Rolex offered a sapphire crystal in place of acrylic, Super-LumiNova in place of tritium lume, applied numerals in place of painted ones, and, of course, a new movement: the high-beat Caliber 3000. 

By 2001, Rolex had released Reference 114270 with a few updates from the 14270 — namely, a new movement: Caliber 3130. The 114270 went on to have a nearly decade-long run, but after almost 60 years of production, the Explorer was about to drastically change. In 2010, Rolex unveiled Reference 214270 — the first Explorer to feature a 39mm case instead of the original 36mm. 

The Contemporary Explorer

Just a few years ago, in 2021, Rolex made another big update to the Explorer’s contemporary lineup. Reference 124270 brought back the beloved 36mm proportions. Unsurprisingly, the new model also came equipped with a new movement. Caliber 3230 has a Chronergy Escapement (a modified lever escapement that improves efficiency) and offers 70 hours of power reserve (for more, read our guide to watches with the longest power reserves). To top it off, it boasts the title of a Rolex Superlative Chronometer with an accuracy rating of +/- 2 seconds per day, which goes beyond the standard COSC rating of -4/+6 seconds per day (read our guide to luxury chronometer watches to learn more). Still, the most impressive aspect of the 124270 is its material. 

For the first time, the Rolex Explorer was available in a Rolesor design, the brand’s name for a two-tone watch with 316L Oystersteel and yellow gold, in addition to the standard 316L Oystersteel version. However, the demand for oversize Explorer models continues to be ever present; hence, two years later, Rolex reintroduced an even larger Explorer at 40mm with Reference 224270. 

Is a Rolex Explorer a Good Investment?

From an investment perspective, Rolex is one of the strongest brands in maintaining value and consistently high demand. Many of the most expensive watches in the world are rare Rolexes. However, none of the most expensive Rolex watches are from the Explorer collection. Among all the lines in the brand’s expansive catalog, the Explorer is a model for the true enthusiast, whereas collections like the Daytona, President, and Submariner have gained more widespread popularity beyond the watch sphere and into broader pop culture. In short, when it comes to the Explorer as an investment, discontinued and rare vintage references are likely to have the strongest value compared with modern editions. 

Where to Buy a Rolex Explorer

Like all Rolex watches, the Explorer is tough to come by at retail. You can purchase a new Rolex watch only at an authorized retailer or a Rolex boutique. There are many resale websites where you can find a new, secondhand, or vintage Explorer. If you’re purchasing a new watch through a retail site, expect to pay a premium for it. Why are Rolex watches so expensive on the secondhand market? Quite simply, the demand far exceeds production, and collectors and enthusiasts are willing to pay a higher price to acquire the watch they want. 

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