The Rolex Explorer reference 6350 dates from 1953, the year Everest was first climbed, and Sotheby’s calls it the first officially branded Rolex Explorer. A circa 1953 example sold by Phillips has a 36mm stainless steel Oyster case and a black dial with “3-6-9” Arabic numerals and a chapter ring, with luminous numerals and pencil hands designed to be read at a glance in poor light. It runs on the automatic calibre A296 with 18 jewels, and unlike the earlier reference 6150, which was marked “Precision”, the 6350 dial reads “Officially Certified Chronometer”, showing the movement had passed stricter timing tests. Most dials were glossy black with gilt printing, while a very small number had a textured “honeycomb” finish. It matters because its clean, numeral-led layout became the archetype of the go-anywhere tool watch.

The Explorer was introduced to commemorate the 1953 Everest ascent by Sir Edmund Hillary and Tenzing Norgay, who both had Rolex watches on the expedition. Historians note the link is partly mythologised: Hillary also carried a Smiths De Luxe, and Tenzing’s watch is the one most often cited. Rolex had experimented with 3-6-9 dials before 1953, but Phillips identifies the 6350 as the first production model to use the configuration officially. The 6350 was made only briefly before the 6610 took over in the mid-1950s, followed by the long-running 1016 in the 1960s, the 14270, and in 2021 the 124270 with the calibre 3230. Throughout, the core formula of a plain steel case and the 3-6-9 dial has stayed remarkably consistent.

Collectors prize the 6350 as the first Explorer to carry the name and as the origin of one of the most copied dial layouts in watchmaking. Honeycomb dials are particularly sought after: Phillips Geneva sold a black honeycomb 6350 with original luminous numerals, aged to a warm orange, for CHF 75,600 against an estimate of CHF 40,000 to 80,000, and a gilt honeycomb example with provenance letter made $126,000 in New York. Sotheby’s notes that early Explorer references command significantly higher prices than later ones. Some enthusiasts point out that the Everest story is more marketing than documented fact, but it has not dampened demand. The 6350 itself is no longer produced; Rolex continues the line with the current Explorer, reference 124270.