Introduction
Inspired by the first-ever successful summit of Mount Everest by Sir Edmund Hillary and his Sherpa Tenzing Norgay, who wore a Rolex Oyster Perpetual, the Rolex Explorer has long been Rolex's ultimate adventure watch. Constructed entirely from Rolex's 904L steel, the Explorer's robust design ensures that it can always battle the elements. Featuring some of Rolex's most capable movements and a rich heritage to boot, the Explorer is another display of their timeless design as this icon of watchmaking has remained virtually untouched in its aesthetic since its inception. Identifiable by its signature 3-6-9 glossy black dial, a flat stainless steel bezel, and entirely satin-brushed stainless steel case and bracelet, the Rolex Explorer has become renowned for its understated class, sporty elegance, and capable construction.
Legendary as the Explorer reference that began to evolve the Explorer’s aesthetic beyond the Oyster Perpetual line, the short-lived ref. 6610 was launched in 1955 and produced until around 1959 and features all of the design signatures that we expect from a vintage Explorer. These come in the form of its lacquered black gilt dial, iconic 3-6-9 dial layout and 36mm stainless steel Oyster case. Featuring radium lume, this example’s gilt chapter ring dial is in great condition, given how radium can impact some dials, and also boasts the rare "exclamation" at 6 o'clock, which denoted the use of a safer amount of radium used in the dial. Fitted with the new (at the time) cal. 1030 movement, the Explorer ref. 6610 ditched the bubble caseback in lieu of the modern flat caseback that has become a Rolex standard. A truly iconic design with wonderful flourishes that remind its wearer of its vintage and original purpose, this Rolex Explorer ref. 6610 will make for an excellent addition to anyone’s collection.
Loupe This Scorecard
Grade
V 8.5
Status
Vetted & Approved
Included
Watch Only
Est. value range
$8,000 – $12,000
The Details
Brand
Rolex
Dimensions
36mm
Model
Explorer
Movement
Automatic cal. 1030
Reference
6610
Bracelet
Leather strap
Year
1956
Condition
Excellent
Material
Stainless steel
Included
Watch only
Dial Color
Black

THE DIAL
Featuring a "safer" amount of radium lume - as denoted by the exclamation point at 6 o'clock, gilt inscriptions, and a 3-6-9 layout, this ref. 6610 has it all as far as the dials of vintage Explorer models are concerned.

THE CONSTRUCTION
With its 36mm diameter and flat caseback that replaced the bubble casebacks seen previously in the Explorer collection, the ref. 6610 wears with a distinctly modern profile.

TIMING MACHINE READOUT
This reading was taken (crown down) with a ONEOF Accuracy Boutique Edition timing machine at time of cataloging. It is provided as a courtesy only, and shall not be construed as a warranty or guarantee of any kind. Please refer to our terms and conditions of sale for more information.
Condition
The watch is in overall excellent condition. The steel case has a number of light scratches and marks across the surface, as expected of a watch of this vintage, with some wear to the backs of the lugs from previous bracelet fitment. The case back has light scratches. The dial is excellent, retaining its glossy finish with remnants of the exclamation dot at six, while the hands show some oxidation. The exclamation dot dial dates to approx 1962, and gives a faint to moderate reading on a geiger counter. It is likely an early service dial. The watch is fitted with a green leather strap and a steel pin buckle in near-mint condition. Please note that when winding, the crown can feel like it ‘slips’ slightly, although it does wind and is running well.
Our Perspective
The last Explorer reference to be produced before the collection was modernized with the ref. 1016, the ref. 6610 harbours a place in the hearts of vintage Rolex collectors with its radium dial and gilt inscriptions that combine to create a truly nostalgic dial that is rich with heritage.














