Amanico, known in the WatchProSite community as Nicolas, brings to light two intriguing examples of the Rolex Explorer II Ref. 16570. His post delves into the subtle yet significant variations that captivate collectors, particularly focusing on dial characteristics like patina and the rare 'rail dial' configuration. This exploration underscores the importance of minute details in vintage Rolex collecting and how they contribute to a watch's unique story and value.
One for its condition and patina of the indices, from 1992:

The second one, Black AND Rail, which is quite unusual for this reference, less unusual for a 16650. Forget the poor condition of the dial, the interest of this watch is educational.
BUT I have to say that I very rarely saw a Black Rail 16550 ( and as a consequence, even more rarely on a 16570 ) in good condition. Most of them are " spider ".
Best,
Nicolas
About the Rolex Explorer Ref. 16550
The Rolex Explorer reference 16550 is a specific iteration within the Explorer line. This reference is noted for its dial variation, which in some examples, such as the one described, presents as a cream rail dial.
The case and movement details for this reference are not provided in the input.
This reference appeals to collectors interested in specific dial variations within the Explorer model range, particularly those seeking the cream rail dial.
Specifications
- Caliber
- 3085
- Case
- Stainless Steel
- Diameter
- 40mm
- Dial
- Black, White ('Panna')
- Water Resist.
- 100m
- Crystal
- Sapphire
About the Rolex Rolex Explorer II Ref. 16570
The Explorer II reference 16570 represents a significant evolution within the Explorer II line, succeeding the 16550 and introducing updated aesthetics and technical refinements. It maintained the core utility of a robust tool watch designed for explorers and those who operate in environments where distinguishing day from night is challenging, thanks to its 24-hour hand and fixed bezel. This reference is often considered a modern classic, bridging the gap between earlier vintage models and contemporary Rolex offerings.
This reference features a 40mm stainless steel case, housing either the Caliber 3185 or later the Caliber 3186 automatic movement, providing a power reserve of approximately 48 hours. It is fitted with a sapphire crystal, enhancing durability and scratch resistance compared to earlier acrylic crystals. The watch offers a water resistance of 100 meters, suitable for everyday wear and light water activities, and is paired with a fixed stainless steel bezel engraved with 24-hour markers.
Appealing to collectors who value a blend of functionality and understated design, the 16570 is available with either a black or white dial, the latter often referred to as the "Polar" dial. Its production run saw the transition between different calibers, which can be a point of interest for enthusiasts. The reference is a practical choice for those seeking a GMT complication in a durable and recognizable form factor, without the rotating bezel found on other GMT models.
Specifications
- Caliber
- Cal. 3185 or Cal. 3186
- Case
- stainless steel
- Diameter
- 40mm
- Dial
- white or black
- Water Resist.
- 100m
- Crystal
- Sapphire crystal