The Rolex GMT-Master II is a legend, a watch synonymous with travel, adventure, and unparalleled horological excellence. While the "Batman" – the reference with a black and blue ceramic bezel – has garnered significant attention and cemented its place in popular culture, its subtly different, equally captivating sibling, often referred to as the "Batgirl," deserves a closer examination. This article delves into the nuances of the Rolex GMT-Master II with its black and blue bezel, exploring its variations, price points, and the reasons behind its enduring appeal, while addressing the often-blurred lines between the informal "Batgirl" designation and other similar references.
The Blurred Lines: Defining the "Batgirl"
Unlike the officially designated "Batman" (typically referencing the 116710BLNR and now the 126710BLNR), the "Batgirl" isn't an official Rolex moniker. It's a community-driven nickname, applied to the various iterations of the GMT-Master II featuring a black and blue bezel. This lack of official designation contributes to some confusion, as the term might encompass several references, each with subtle differences in case material, movement, and overall aesthetic. The key characteristic uniting them all is the striking two-tone Cerachrom bezel – a blend of deep black and vibrant blue. This is what visually distinguishes them from other GMT-Master II models and fuels the "Batgirl" nickname.
The Heart of the Matter: The Rolex GMT-Master II Movement
Regardless of the specific reference number – whether it's a 126710BLRO (Pepsi), a 116710BLNR (Batman), or the models informally dubbed "Batgirl" – the core of the watch remains the highly reliable and robust Rolex movement. This calibre, typically a variation of the 3186 or the newer 3285 (found in the 126710BLNR and related references), is renowned for its accuracy, power reserve, and overall durability. These movements represent the pinnacle of Rolex's in-house manufacturing capabilities, undergoing rigorous testing to ensure impeccable performance. The smooth operation of the GMT hand, allowing for the tracking of multiple time zones simultaneously, is a testament to the engineering prowess behind these timepieces.
Exploring the Variations: Reference Numbers and Subtle Differences
While the "Batgirl" designation lacks official recognition, understanding the specific reference numbers associated with the black and blue bezel is crucial. The most commonly discussed reference under the "Batgirl" umbrella is often the 126710BLNR (though this is often referred to as the Batman). However, the term might also encompass earlier iterations with similar color schemes, though potentially with different movements or case materials. These variations, while visually similar, might command different prices in the secondary market. The subtle differences in details, such as the bracelet type (Oyster or Jubilee), the lume, or even the minor adjustments to the case profile over the years, contribute to the nuances that collectors appreciate.
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